Medical terms A-I

From WikiMD

  • adenine - noun (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
  • AAA - noun an aneurysm of the abdominal aorta associated with old age and hypertension
  • Ab - noun the blood group whose red cells carry both the A and B antigens the eleventh month of the civil year; the fifth month of the ecclesiastical year in the Jewish calendar (in July and August) the muscles of the abdomen a bachelor's degree in arts and sciences
  • Abate - verb become less in amount or intensity make less active or intense
  • Abatement - noun the act of abating an interruption in the intensity or amount of something
  • Abdomen - noun the region of the body of a vertebrate between the thorax and the pelvis the cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm
  • Abdomen - noun the region of the body of a vertebrate between the thorax and the pelvis the cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm
  • acute - adj. having or experiencing a rapid onset and short but severe course of critical importance and consequence extremely sharp or intense having or demonstrating ability to recognize or draw fine distinctions of an angle; less than 90 degrees ending in a sharp point noun a mark (') placed above a vowel to indicate pronunciation
  • Abdominal - adj. of or relating to or near the abdomen noun the muscles of the abdomen
  • Abdominal cavity - noun the cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm
  • Abducent nerve - noun a small motor nerve supplying the lateral rectus muscle of the eye
  • Abduction - noun (physiology) moving of a body part away from the central axis of the body the criminal act of capturing and carrying away by force a family member; if a man's wife is abducted it is a crime against the family relationship and against the wife
  • Abductor muscle - noun a muscle that draws a body part away from the median line
  • Aberration - noun an optical phenomenon resulting from the failure of a lens or mirror to produce a good image a disorder in one's mental state a state or condition markedly different from the norm
  • Abiotrophy - noun a loss of vitality and a degeneration of cells and tissues not due to any apparent injury
  • Ablate - verb remove an organ or bodily structure wear away through erosion or vaporization
  • Ablation - noun surgical removal of a body part or tissue the erosive process that reduces the size of glaciers
  • Ablation - noun surgical removal of a body part or tissue the erosive process that reduces the size of glaciers
  • Abnormal - adj. much greater than the normal not normal; not typical or usual or regular or conforming to a norm departing from the normal in e.g. intelligence and development
  • Abortifacient - adj. causing abortion noun a drug (or other chemical agent) that causes abortion
  • Abortion - noun termination of pregnancy failure of a plan
  • Abortion - noun termination of pregnancy failure of a plan
  • artificial - adj. artificially formal contrived by art rather than naturenot arising from natural growth or characterized by vital processes
  • Abortion - noun termination of pregnancy failure of a plan
  • habitual - adj. made a norm or custom or habit having a habit of long standing commonly used or practiced; usual
  • Abortion - noun termination of pregnancy failure of a plan
  • induced - adj. brought about or caused; not spontaneous
  • Abortion - noun termination of pregnancy failure of a plan
  • multiple - adj. having or involving or consisting of more than one part or entity or individual noun the product of a quantity by an integer
  • Abortion - noun termination of pregnancy failure of a plan
  • Abortion - noun termination of pregnancy failure of a plan
  • spontaneous - adj. happening or arising without apparent external cause said or done without having been planned or written in advance
  • Abortion - noun termination of pregnancy failure of a plan
  • therapeutic - adj. relating to or involved in therapy tending to cure or restore to health noun a medicine or therapy that cures disease or relieve pain
  • Abortive - adj. failing to accomplish an intended result
  • Abrade - verb wear away rub hard or scrub
  • Abrasion - noun erosion by friction an abraded area where the skin is torn or worn off the wearing down of rock particles by friction due to water or wind or ice
  • abruptio placentae - noun a disorder of pregnancy in which the placenta prematurely separates from the wall of the uterus
  • Abruption - noun an instance of sudden interruption
  • Abs - noun any of a class of composite plastics used to make car bodies and cases for computers and other appliances
  • Abscess - noun symptom consisting of a localized collection of pus surrounded by inflamed tissue
  • Abscess - noun symptom consisting of a localized collection of pus surrounded by inflamed tissue
  • breast - noun the front part of the trunk from the neck to the abdomen either of two soft fleshy milk-secreting glandular organs on the chest of a woman meat carved from the breast of a fowlverb reach the summit meet at breast level confront bodily
  • Abscess - noun symptom consisting of a localized collection of pus surrounded by inflamed tissue
  • Abscess - noun symptom consisting of a localized collection of pus surrounded by inflamed tissue
  • Abscess - noun symptom consisting of a localized collection of pus surrounded by inflamed tissue
  • skin - noun an outer surface (usually thin) a bag serving as a container for liquids; it is made from the hide of an animal a natural protective body covering and site of the sense of touch a person's skin regarded as their life the tissue forming the hard outer layer (of e.g. a fruit) body covering of a living animal the rind of a fruit or vegetable verb strip the skin off bruise, cut, or injure the skin or the surface of remove the bark of a tree climb awkwardly, as if by scrambling
  • Abscission - noun the act of cutting something off shedding of flowers and leaves and fruit following formation of scar tissue in a plant
  • Absinthe - noun strong green liqueur flavored with wormwood and anise aromatic herb of temperate Eurasia and North Africa having a bitter taste used in making the liqueur absinthe
  • Absorb - verb cause to become one with engage or engross wholly take up mentally assimilate or take in take in, also metaphorically become imbued take up, as of debts or paymentssuck or take up or in engross (oneself) fully
  • Absorption - noun (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid (physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium the mental state of being preoccupied by somethingcomplete attention; intense mental effort the process of absorbing nutrients into the body after digestion the social process of absorbing one cultural group into harmony with another
  • Abstemious - adj. sparing in consumption of especially food and drink marked by temperance in indulgence
  • Abstinence - noun act or practice of refraining from indulging an appetite the trait of abstaining (especially from alcohol)
  • Abstinence - noun act or practice of refraining from indulging an appetite the trait of abstaining (especially from alcohol)
  • periodic - adj. recurring or reappearing from time to time happening or recurring at regular intervals recurring at regular intervals
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • child - noun a young person of either sex a human offspring (son or daughter) of any age an immature childish person a member of a clan or tribe
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • elder - adj. used of the older of two persons of the same name especially used to distinguish a father from his son noun a person who is older than you are any of various church officers any of numerous shrubs or small trees of temperate and subtropical northern hemisphere having white flowers and berrylike fruit
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • pregnancy - noun the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • steroid - noun any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects any hormone affecting the development and growth of sex organs
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • substance - noun that which has mass and occupies space the stuff of which an object consists the idea that is intended the choicest or most essential or most vital part of some idea or experience what a communication that is about something is aboutconsiderable capital (wealth or income)
  • Abuse - noun a rude expression intended to offend or hurt cruel or inhumane treatment improper or excessive use verb use wrongly or improperly or excessively use foul or abusive language towardschange the inherent purpose or function of something treat badly
  • Acanthosis nigricans - noun a skin disease characterized by dark wartlike patches in the body folds; can be benign or malignant
  • Acapnia - noun a state in which the level of carbon dioxide in the blood is lower than normal; can result from deep or rapid breathing
  • Acaricide - noun a chemical agent used to kill mites
  • Access - noun the act of approaching or entering a way of entering or leaving (computer science) the operation of reading or writing stored information the right to obtain or make use of or take advantage of something (as services or membership) a code (a series of characters or digits) that must be entered in some way (typed or dialed or spoken) to get the use of something (a telephone line or a computer or a local area network etc.) the right to enterverb reach or gain access to obtain or retrieve from a storage device; as of information on a computer
  • Accessory - adj. furnishing added support noun a supplementary component that improves capability clothing that is worn or carried, but not part of your main clothing someone who helps another person commit a crime
  • Accessory nerve - noun arises from two sets of roots (cranial and spinal) that unite to form the nerve
  • Accommodation - noun (physiology) the automatic adjustment in focal length of the lens of the eye the act of providing something (lodging or seat or food) to meet a need living quarters provided for public convenience in the theories of Jean Piaget: the modification of internal representations in order to accommodate a changing knowledge of reality a settlement of differences making or becoming suitable; adjusting to circumstances
  • Accoucheur - noun a physician specializing in obstetrics
  • Accoucheuse - noun a woman skilled in aiding the delivery of babies
  • Acellular - adj. not made up of or divided into cells
  • Acetabular - adj. of the cup-shaped socket that receives the head of the thigh bone
  • Acetabulum - noun the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint
  • Acetaminophen - noun an analgesic for mild pain; also used as an antipyretic; (Datril, Tylenol, Panadol, Phenaphen, Tempra, and Anacin III are trademarks of brands of acetaminophen tablets)
  • Acetate - noun a salt or ester of acetic acid a fabric made from fibers of cellulose acetate
  • Acetic acid - noun a colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals
  • Acetone - noun the simplest ketone; a highly inflammable liquid widely used as an organic solvent and as material for making plastics
  • Acetylcholine - noun a neurotransmitter that is a derivative of choline; released at the ends of nerve fibers in the somatic and parasympathetic nervous systems
  • acetylcholine - noun a neurotransmitter that is a derivative of choline; released at the ends of nerve fibers in the somatic and parasympathetic nervous systems
  • AChE - noun a dull persistent (usually moderately intense) painverb have a desire for something or someone who is not present be the source of pain feel physical pain
  • Achlorhydria - noun an abnormal deficiency or absence of free hydrochloric acid in the gastric juice; often associated with severe anemias and cancer of the stomach
  • Achondroplasia - noun an inherited skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism
  • Achromycin - noun an antibiotic (trade name Achromycin) derived from microorganisms of the genus Streptomyces and used broadly to treat infections
  • Acid rain - noun rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water
  • Acid - adj. having the characteristics of an acid harsh or corrosive in tone being sour to the taste noun street name for lysergic acid diethylamide any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
  • amino - adj. pertaining to or containing any of a group of organic compounds of nitrogen derived from ammonia noun the radical -NH2
  • Acid - adj. having the characteristics of an acid harsh or corrosive in tone being sour to the taste noun street name for lysergic acid diethylamide any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
  • bile - noun a digestive juice secreted by the liver and stored in the gallbladder; aids in the digestion of fats
  • Acid - adj. having the characteristics of an acid harsh or corrosive in tone being sour to the taste noun street name for lysergic acid diethylamide any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
  • fatty - adj. containing or composed of fat noun a rotund individual
  • Acid - adj. having the characteristics of an acid harsh or corrosive in tone being sour to the taste noun street name for lysergic acid diethylamide any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
  • Acid - adj. having the characteristics of an acid harsh or corrosive in tone being sour to the taste noun street name for lysergic acid diethylamide any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
  • Acid - adj. having the characteristics of an acid harsh or corrosive in tone being sour to the taste noun street name for lysergic acid diethylamide any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
  • Acid - adj. having the characteristics of an acid harsh or corrosive in tone being sour to the taste noun street name for lysergic acid diethylamide any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
  • Acidosis - noun abnormally high acidity (excess hydrogen-ion concentration) of the blood and other body tissues
  • Acinus - noun one of the small sacs or saclike dilations in a compound gland one of the small drupes making up an aggregate or multiple fruit like a blackberry
  • pulmonary - adj. relating to or affecting the lungs
  • Acne - noun an inflammatory disease involving the sebaceous glands of the skin; characterized by papules or pustules or comedones
  • Acne rosacea - noun a skin disease of adults (more often women) in which blood vessels of the face enlarge resulting in a flushed appearance
  • Acne vulgaris - noun the most common form of acne; usually affects people from puberty to young adulthood
  • Acoustic - adj. of or relating to the science of acoustics noun a remedy for hearing loss or deafness
  • Acoustic aphasia - noun an impairment in understanding spoken language that is not attributable to hearing loss
  • Acoustic nerve - noun a composite sensory nerve supplying the hair cells of the vestibular organ and the hair cells of the cochlea
  • Acquired - adj. gotten through environmental forces
  • Acquired immunity - noun immunity to a particular disease that is not innate but has been acquired during life; immunity can be acquired by the development of antibodies after an attack of an infectious disease or by a pregnant mother passing antibodies through the placenta to a fetus or by vaccination
  • Acrocentric chromosome - noun a chromosome with the centromere near one end so that one chromosomal arm is short and one is long
  • Acrocyanosis - noun cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion
  • Acromegaly - noun enlargement of bones of hands and feet and face; often accompanied by headache and muscle pain and emotional disturbances; caused by overproduction of growth hormone by the anterior pituitary gland (due to a tumor)
  • Acromion - noun the outermost point of the spine of the shoulder blade
  • Acrylamide - noun a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals
  • Actinic - adj. relating to or exhibiting actinism
  • Actinic keratosis - noun an overgrowth of skin layers resulting from extended exposure to the sun
  • Activated charcoal - noun powdered or granular carbon used for purifying by adsorption; given orally (as a slurry) it is an antidote for some kinds of poisons
  • Active immunity - noun a form of acquired immunity in which the body produces its own antibodies against disease-causing antigens
  • Activity - noun any specific behavior (chemistry) the capacity of a substance to take part in a chemical reaction the trait of being active; moving or acting rapidly and energetically an organic process that takes place in the body a process existing in or produced by nature (rather than by the intent of human beings) the state of being active
  • drug - noun a substance that is used as a medicine or narcotic verbadminister a drug to use recreational drugs
  • visual - adj. able to be seen relating to or using sight
  • Acuity - noun sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) a quick and penetrating intelligence
  • auditory - adj. of or relating to the process of hearing
  • Acuity - noun sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) a quick and penetrating intelligence
  • visual - adj. able to be seen relating to or using sight
  • Acupressure - noun treatment of symptoms by applying pressure with the fingers to specific pressure points on the body
  • Acupuncture - noun treatment of pain or disease by inserting the tips of needles at specific points on the skin
  • Acute - adj. having or experiencing a rapid onset and short but severe course of critical importance and consequence extremely sharp or intense having or demonstrating ability to recognize or draw fine distinctions of an angle; less than 90 degrees ending in a sharp point noun a mark (') placed above a vowel to indicate pronunciation
  • Acute kidney failure - noun renal failure associated with burns or other trauma or with acute infection or obstruction of the urinary tract
  • Acute lymphoblastic leukemia - noun acute leukemia characterized by proliferation of immature lymphoblast-like cells in bone marrow, lymph nodes, spleen, and blood; most common in children
  • Acute lymphocytic leukemia - noun acute leukemia characterized by proliferation of immature lymphoblast-like cells in bone marrow, lymph nodes, spleen, and blood; most common in children
  • Acute myeloid leukemia - noun acute leukemia characterized by proliferation of granular leukocytes; most common in adolescents and young adults
  • Acute renal failure - noun renal failure associated with burns or other trauma or with acute infection or obstruction of the urinary tract
  • Acyclovir - noun an oral antiviral drug (trade name Zovirax) used to treat genital herpes; does not cure the disease but relieves the symptoms
  • Ad-lib - adj. with little or no preparation or forethought said or done without having been planned or written in advance noun remark made spontaneously without prior preparation verb perform without preparation
  • Ad - adv. in the Christian era; used before dates after the supposed year Christ was born noun a public promotion of some product or service
  • ADA - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • ADA - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • Adam's apple - noun the largest cartilage of the larynx tropical shrub having glossy foliage and fragrant nocturnal flowers with crimped or wavy corollas; northern India to Thailand
  • Adamantine - adj. having the hardness of a diamond consisting of or having the hardness of adamant impervious to pleas, persuasion, requests, reason
  • ADD - noun a condition (mostly in boys) characterized by behavioral and learning disorders verb make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope ofmake an addition by combining numbers state or say furtherconstitute an addition determine the sum of bestow a quality on
  • Addiction - noun (Roman law) a formal award by a magistrate of a thing or person to another person (as the award of a debtor to his creditor); a surrender to a master an abnormally strong cravingbeing abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)
  • Addiction - noun (Roman law) a formal award by a magistrate of a thing or person to another person (as the award of a debtor to his creditor); a surrender to a master an abnormally strong cravingbeing abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)
  • computer - noun a machine for performing calculations automatically an expert at calculation (or at operating calculating machines)
  • Adduction - noun (physiology) moving of a body part toward the central axis of the body
  • Adductor muscle - noun a muscle that draws a body part toward the median line
  • Aden - noun an important port of Yemen; located on the Gulf of Aden; its strategic location have made it a major trading center of southern Arabia since ancient times
  • Adenine - noun (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
  • Adenitis - noun inflammation of a gland or lymph node
  • Adenocarcinoma - noun malignant tumor originating in glandular epithelium
  • Adenoidectomy - noun surgical removal of the adenoids; commonly performed along with tonsillectomy
  • Adenoma - noun a benign epithelial tumor of glandular origin
  • Adenomyosis - noun the presence of endometrium elsewhere than in the lining of the uterus; causes premenstrual pain and dysmenorrhea
  • Adenopathy - noun a glandular disease or enlargement of glandular tissue (especially of the lymph glands)
  • Adenosine - noun (biochemistry) a nucleoside that is a structural component of nucleic acids; it is present in all living cells in a combined form as a constituent of DNA and RNA and ADP and ATP and AMP
  • Adenosine deaminase - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • ADA - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • Adenosine deaminase - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • ADA - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • deficiency - noun lack of an adequate quantity or number the state of needing something that is absent or unavailable
  • Adenosine triphosphate - noun a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions
  • Adenovirus - noun any of a group of viruses including those that in humans cause upper respiratory infections or infectious pinkeye
  • ADH - noun hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules
  • antidiuretic hormone - noun hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules
  • inappropriate - adj. not suitable for a particular occasion etc not in keeping with what is correct or proper
  • ADHD - noun a condition (mostly in boys) characterized by behavioral and learning disorders
  • Adhesion - noun a fibrous band of scar tissue that binds together normally separate anatomical structures abnormal union of bodily tissues; most common in the abdomen faithful support for a religion or cause or political party the property of sticking together (as of glue and wood) or the joining of surfaces of different composition
  • Adipose - adj. composed of animal fat
  • Adiposity - noun having the property of containing fat
  • Adjacent - adj. near or close to but not necessarily touchingnearest in space or position; immediately adjoining without intervening space having a common boundary or edge; touching
  • Adjuvant - adj. enhancing the action of a medical treatmentfurnishing added support noun an additive that enhances the effectiveness of medical treatment
  • Admission - noun the act of admitting someone to enter an acknowledgment of the truth of something the fee charged for admission
  • Adnexa - noun an accessory or adjoining anatomical parts or appendages (especially of the embryo)
  • Adrenal cortex - noun the cortex of the adrenal gland; secretes corticosterone and sex hormones
  • Adrenal gland - noun either of a pair of complex endocrine glands situated near the kidney
  • Adrenal medulla - noun the medulla of the adrenal gland; secretes epinephrine
  • Adrenaline - noun a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
  • lymphoma - noun a neoplasm of lymph tissue that is usually malignant; one of the four major types of cancer
  • Adventitia - noun an enveloping or covering membrane or layer of body tissue
  • Adventitious - adj. associated by chance and not an integral part
  • Aerobic - adj. depending on free oxygen or air based on or using the principles of aerobics; enhancing respiratory and circulatory efficiency
  • Aerophagia - noun swallowing air (usually followed by belching and discomfort and flatulence)
  • Aerosol - noun a dispenser that holds a substance under pressure and that can release it as a fine spray (usually by means of a propellant gas) a cloud of solid or liquid particles in a gas
  • Aerospace medicine - noun the study and treatment of disorders associated with flight (especially with space flight)
  • Aesculapius - noun son of Apollo; a hero and the Roman god of medicine and healing; his daughters were Hygeia and Panacea
  • Aetiology - noun the philosophical study of causation the cause of a disease
  • Affect - noun the conscious subjective aspect of feeling or emotionverb act physically on; have an effect upon have an effect uponhave an emotional or cognitive impact upon make believe with the intent to deceive connect closely and often incriminatingly
  • Affective disorder - noun any mental disorder not caused by detectable organic abnormalities of the brain and in which a major disturbance of emotions is predominant
  • seasonal - adj. occurring at or dependent on a particular seasonnoun a worker who finds employment only in certain seasons
  • SAD - adj. experiencing or showing sorrow or unhappiness of things that make you feel sad bad; unfortunate
  • Afferent - adj. of nerves and nerve impulses; conveying sensory information from the sense organs to the CNS noun a nerve that passes impulses from receptors toward or to the central nervous system
  • Afferent nerve - noun a nerve that passes impulses from receptors toward or to the central nervous system
  • Affinity - noun a natural attraction or feeling of kinship inherent resemblance between persons or things the force attracting atoms to each other and binding them together in a molecule(immunology) the attraction between an antigen and an antibody a close connection marked by community of interests or similarity in nature or character (biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts (anthropology) kinship by marriage or adoption; not a blood relationship
  • Aflatoxin - noun a potent carcinogen from the fungus Aspergillus; can be produced and stored for use as a bioweapon
  • AFP - noun an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)
  • alpha fetoprotein - noun an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)
  • African-American - adj. pertaining to or characteristic of Americans of African ancestry noun an American whose ancestors were born in Africa
  • African-American - adj. pertaining to or characteristic of Americans of African ancestry noun an American whose ancestors were born in Africa
  • Afterbirth - noun the placenta and fetal membranes that are expelled from the uterus after the baby is born
  • Agammaglobulinemia - noun a rare immunological disorder characterized by the virtual absence of gamma globulin in the blood and consequent susceptibility to infection
  • Agenesis - noun imperfect development; nondevelopment of a part
  • Agenesis - noun imperfect development; nondevelopment of a part
  • sacral - adj. of or relating to sacred rites of or relating to or near the sacrum
  • Agent Orange - noun a herbicide used in the Vietnam War to defoliate forest areas
  • Agent - noun an active and efficient cause; capable of producing a certain effect a businessman who buys or sells for another in exchange for a commission a representative who acts on behalf of other persons or organizations any agent or representative of a federal agency or bureau a substance that exerts some force or effect the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause
  • Agent - noun an active and efficient cause; capable of producing a certain effect a businessman who buys or sells for another in exchange for a commission a representative who acts on behalf of other persons or organizations any agent or representative of a federal agency or bureau a substance that exerts some force or effect the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause
  • antibiotic - adj. of or relating to antibiotic drugs noun a chemical substance derivable from a mold or bacterium that kills microorganisms and cures infections
  • Agent - noun an active and efficient cause; capable of producing a certain effect a businessman who buys or sells for another in exchange for a commission a representative who acts on behalf of other persons or organizations any agent or representative of a federal agency or bureau a substance that exerts some force or effect the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause
  • antifungal - adj. capable of destroying fungi noun any agent that destroys or prevents the growth of fungi
  • Agent - noun an active and efficient cause; capable of producing a certain effect a businessman who buys or sells for another in exchange for a commission a representative who acts on behalf of other persons or organizations any agent or representative of a federal agency or bureau a substance that exerts some force or effect the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause
  • Agent - noun an active and efficient cause; capable of producing a certain effect a businessman who buys or sells for another in exchange for a commission a representative who acts on behalf of other persons or organizations any agent or representative of a federal agency or bureau a substance that exerts some force or effect the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause
  • antimicrobial - adj. capable of destroying or inhibiting the growth of disease-causing microorganisms noun an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease
  • Agent - noun an active and efficient cause; capable of producing a certain effect a businessman who buys or sells for another in exchange for a commission a representative who acts on behalf of other persons or organizations any agent or representative of a federal agency or bureau a substance that exerts some force or effect the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause
  • antiprotozoal - noun a medicinal drug used to fight diseases (like malaria) that are caused by protozoa
  • Agent - noun an active and efficient cause; capable of producing a certain effect a businessman who buys or sells for another in exchange for a commission a representative who acts on behalf of other persons or organizations any agent or representative of a federal agency or bureau a substance that exerts some force or effect the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause
  • antiviral - adj. inhibiting or stopping the growth and reproduction of viruses noun any drug that destroys viruses
  • Agent - noun an active and efficient cause; capable of producing a certain effect a businessman who buys or sells for another in exchange for a commission a representative who acts on behalf of other persons or organizations any agent or representative of a federal agency or bureau a substance that exerts some force or effect the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause
  • Aggressive - adj. having or showing determination and energetic pursuit of your ends characteristic of an enemy or one eager to fight tending to spread quickly
  • Aging - adj. growing old noun the organic process of growing older and showing the effects of increasing age acquiring desirable qualities by being left undisturbed for some time
  • Aging - adj. growing old noun the organic process of growing older and showing the effects of increasing age acquiring desirable qualities by being left undisturbed for some time
  • Agitated depression - noun a state of clinical depression in which the person exhibits irritability and restlessness
  • Agnate - adj. related on the father's side noun one related on the father's side
  • Agnosia - noun inability to recognize objects by use of the senses
  • Agonist - noun (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction a muscle that contracts while another relaxes someone involved in a contest or battle (as in an agon) the principal character in a work of fiction
  • Agonist - noun (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction a muscle that contracts while another relaxes someone involved in a contest or battle (as in an agon) the principal character in a work of fiction
  • Agoraphobia - noun a morbid fear of open spaces (as fear of being caught alone in some public place)
  • Agranulocytosis - noun an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes
  • Agranulocytosis - noun an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes
  • Agreement - noun compatibility of observations the thing arranged or agreed to the statement (oral or written) of an exchange of promises the verbal act of agreeing the determination of grammatical inflection on the basis of word relations harmony of people's opinions or actions or characters
  • arbitration - noun the act of deciding as an arbiter; giving authoritative judgment (law) the hearing and determination of a dispute by an impartial referee agreed to by both parties (often used to settle disputes between labor and management)
  • Ague - noun a fit of shivering or shaking successive stages of chills and fever that is a symptom of malaria a mark (') placed above a vowel to indicate pronunciation
  • AID - noun the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose a resource a gift of money to support a worthy person or cause the work of providing treatment for or attending to someone or something verb improve the condition of give help or assistance; be of service
  • Aid - noun the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose a resource a gift of money to support a worthy person or cause the work of providing treatment for or attending to someone or something verb improve the condition of give help or assistance; be of service
  • AIDS - noun a serious (often fatal) disease of the immune system transmitted through blood products especially by sexual contact or contaminated needles
  • Air bag - noun a safety restraint in an automobile; the bag inflates on collision and prevents the driver or passenger from being thrown forward
  • Airway - noun a commercial enterprise that provides scheduled flights for passengers a duct that provides ventilation (as in mines)the passages through which air enters and leaves the body a designated route followed by airplanes in flying from one airport to another
  • AK - noun a state in northwestern North America; the 49th state admitted to the union
  • Akinesia - noun motionlessness attributable to a temporary paralysis
  • AKU - noun a Kwa language spoken by the Yoruba in southwestern Nigeria
  • ALA - noun a wing of an insect a flat wing-shaped process or winglike part of an organism
  • Alanine - noun a crystalline amino acid that occurs in many proteins
  • ALT - noun angular distance above the horizon (especially of a celestial object)
  • Alb - noun a white linen liturgical vestment with sleeves; worn by priests
  • Albert Sabin - noun United States microbiologist (born in Poland) who developed the Sabin vaccine that is taken orally against poliomyelitis (born 1906)
  • Albinism - noun the congenital absence of pigmentation in the eyes and skin and hair
  • Albinism - noun the congenital absence of pigmentation in the eyes and skin and hair
  • Albino - noun a person with congenital albinism: white hair and milky skin; eyes are usually pink
  • Albumen - noun the white part of an egg; the nutritive and protective gelatinous substance surrounding the yolk consisting mainly of albumin dissolved in water a simple water-soluble protein found in many animal tissues and liquids
  • Albumin - noun a simple water-soluble protein found in many animal tissues and liquids
  • Albuminuria - noun the presence of excessive protein (chiefly albumin but also globulin) in the urine; usually a symptom of kidney disorder
  • Alcohol - noun a liquor or brew containing alcohol as the active agent any of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation
  • Alcohol abuse - noun excessive use of alcohol and alcoholic drinks
  • Alcoholics Anonymous - noun an international organization that provides a support group for persons trying to overcome alcoholism
  • Alcoholism - noun habitual intoxication; prolonged and excessive intake of alcoholic drinks leading to a breakdown in health and an addiction to alcohol such that abrupt deprivation leads to severe withdrawal symptoms an intense persistent desire to drink alcoholic beverages to excess
  • Aldosterone - noun a corticosteroid hormone that is secreted by the cortex of the adrenal gland; regulates salt (sodium and potassium) and water balance
  • Aldosteronism - noun a condition caused by overproduction of aldosterone
  • Alembic - noun an obsolete kind of container used for distillation; two retorts connected by a tube
  • Alexia - noun inability to perceive written words
  • Alienist - noun a psychiatrist and specialist in the legal aspects of mental illness
  • Alimentary canal - noun tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination
  • Alkaloid - noun natural bases containing nitrogen found in plants
  • Alkaloid - noun natural bases containing nitrogen found in plants
  • vinca - noun periwinkles: low creeping evergreen perennials
  • Alkalosis - noun abnormally high alkalinity (low hydrogen-ion concentration) of the blood and other body tissues
  • Alkaptonuria - noun a rare recessive metabolic anomaly marked by ochronosis and the presence of alkapton in the urine
  • Alkyl group - noun any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons
  • Allele - noun either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character
  • Allelic - adj. of or relating to alleles
  • Allergen - noun any substance that can cause an allergy
  • Allergic reaction - noun hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
  • perennial - adj. recurring again and again lasting three seasons or more lasting an indefinitely long time; suggesting self-renewal nouna plant lasting for three seasons or more
  • seasonal - adj. occurring at or dependent on a particular seasonnoun a worker who finds employment only in certain seasons
  • Allergy - noun hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
  • Allergy - noun hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
  • Allergy - noun hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
  • Allergy - noun hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
  • peanut - adj. of little importance or influence or power; of minor status noun pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms a young child who is small for his age widely cultivated American plant cultivated in tropical and warm regions; showy yellow flowers on stalks that bend over to the soil so that seed pods ripen undergroundunderground pod of the peanut vine
  • Allergy - noun hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
  • Allogeneic - adj. denoting or relating to cells or tissues from individuals belonging to the same species but genetically dissimilar (and hence immunologically incompatible)
  • Allograft - noun tissue or organ transplanted from a donor of the same species but different genetic makeup; recipient's immune system must be suppressed to prevent rejection of the graft
  • Allopathic - adj. of or relating to the practice of allopathy
  • Allopathy - noun the usual method of treating disease with remedies that produce effects differing from those produced by the disease itself
  • Alopecia - noun loss of hair (especially on the head) or loss of wool or feathers; in humans it can result from heredity or hormonal imbalance or certain diseases or drugs and treatments (chemotherapy for cancer)
  • Alopecia - noun loss of hair (especially on the head) or loss of wool or feathers; in humans it can result from heredity or hormonal imbalance or certain diseases or drugs and treatments (chemotherapy for cancer)
  • traumatic - adj. psychologically painful; "few experiences are more traumatic than losing a child" of or relating to a physical injury or wound to the body
  • Alpha-blocker - noun any of various drugs that block alpha-adrenergic receptors; used in treating benign prostatic hyperplasia; relaxes the muscles of the prostate and bladder
  • Alpha-interferon - noun a form of interferon that is produced endogenously and commercially for its pharmacological effects (including regulation of the immune system and antiviral and antineoplastic effects)
  • Alpha particle - noun a positively charged particle that is the nucleus of the helium atom; emitted from natural or radioactive isotopes
  • Alpha fetoprotein - noun an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)
  • AFP - noun an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)
  • Alprazolam - noun an antianxiety agent (trade name Xanax) of the benzodiazepine class
  • ALPS - noun a large mountain system in south-central Europe; scenic beauty and winter sports make them a popular tourist attraction
  • ALS - noun thickening of tissue in the motor tracts of the lateral columns and anterior horns of the spinal cord; results in progressive muscle atrophy that starts in the limbs
  • ALT - noun angular distance above the horizon (especially of a celestial object)
  • Alternative medicine - noun the practice of medicine without the use of drugs; may involve herbal medicines or self-awareness or biofeedback or acupuncture
  • Alternative Medicine - noun the practice of medicine without the use of drugs; may involve herbal medicines or self-awareness or biofeedback or acupuncture
  • Altitude sickness - noun effects (as nosebleed or nausea) of oxygen deficiency in the blood and tissues at high altitudes
  • Altitude - noun elevation especially above sea level or above the earth's surface the perpendicular distance from the base of a geometric figure to opposite vertex (or side if parallel) angular distance above the horizon (especially of a celestial object)
  • Altitude - noun elevation especially above sea level or above the earth's surface the perpendicular distance from the base of a geometric figure to opposite vertex (or side if parallel) angular distance above the horizon (especially of a celestial object)
  • high - adj. happy and excited and energetic slightly and pleasantly intoxicated from alcohol or a drug (especially marijuana) (literal meaning) being at or having a relatively great or specific elevation or upward extension (sometimes used in combinations like `knee-high') greater than normal in degree or intensity or amount used of sounds and voices; high in pitch or frequency (used of the smell of meat) smelling spoiled or tainted standing above others in quality or position adv. at a great altitude far up toward the source in or to a high position, amount, or degree in a rich manner noun a lofty level or position or degree a high place a state of altered consciousness induced by alcohol or narcotics a state of sustained elation an air mass of higher than normal pressure a forward gear with a gear ratio that gives the greatest vehicle velocity for a given engine speed a public secondary school usually including grades 9 through 12
  • Aluminum - noun a silvery ductile metallic element found primarily in bauxite
  • Alveolar - adj. pertaining to the tiny air sacs of the lungs pertaining to the alveolar ridge noun a consonant articulated with the tip of the tongue near the gum ridge
  • Alveolitis - noun inflammation of the alveoli in the lungs caused by inhaling dust; with repeated exposure the condition may become chronic inflammation in the socket of a tooth; sometimes occurs after a tooth is extracted and a blood clot fails to form
  • Alveolus - noun a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways a bony socket in the alveolar ridge that holds a tooth
  • Alzheimer's disease - noun a progressive form of presenile dementia that is similar to senile dementia except that it usually starts in the 40s or 50s; first symptoms are impaired memory which is followed by impaired thought and speech and finally complete helplessness
  • Am - noun modulation of the amplitude of the (radio) carrier wave a master's degree in arts and sciences a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
  • Amalgam - noun a combination or blend of diverse things an alloy of mercury with another metal (usually silver) used by dentists to fill cavities in teeth; except for iron and platinum all metals dissolve in mercury and chemists refer to the resulting mercury mixtures as amalgams
  • Amastia - noun absence of the mammary glands (either through surgery or developmental defect)
  • Ambidextrous - adj. marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another equally skillful with each hand
  • Ambient - adj. completely enveloping
  • Amblyopia - noun visual impairment without apparent organic pathology
  • Amblyopia - noun visual impairment without apparent organic pathology
  • nocturnal - adj. belonging to or active during the night of or relating to or occurring in the night
  • Ambulance - noun a vehicle that takes people to and from hospitals
  • Ambulatory - adj. relating to or adapted for walking able to walk about noun a covered walkway (as in a cloister)
  • Ameba - noun naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion
  • Amebiasis - noun infection by a disease-causing ameba
  • Amebic dysentery - noun inflammation of the intestines caused by Endamoeba histolytica; usually acquired by ingesting food or water contaminated with feces; characterized by severe diarrhea
  • Amelioration - noun the act of relieving ills and changing for the better
  • Amenia - noun absence or suppression of normal menstrual flow
  • Amenorrhea - noun absence or suppression of normal menstrual flow
  • ADA - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • ADA - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • American dog tick - noun common tick that can transmit Rocky Mountain spotted fever and tularemia
  • first - adj. being the gear producing the lowest drive speed ranking above all others preceding all others in time or space or degreehighest in pitch or chief among parts or voices or instruments or orchestra sections indicating the beginning unit in a series serving to begin serving to set in motion adv. before anything else the initial time before another in time, space, or importanceprominently forward noun an honours degree of the highest classthe first element in a countable series the first or highest in an ordering or series the fielding position of the player on a baseball team who is stationed at first of the bases in the infield (counting counterclockwise from home plate) the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving the time at which something is supposed to begin
  • Americium - noun a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
  • Amine - noun a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals
  • Amino acid - noun organic compounds containing an amino group and a carboxylic acid group
  • Amino acid - noun organic compounds containing an amino group and a carboxylic acid group
  • branched chain - noun an open chain of atoms with one or more side chains attached to it
  • Amino acid - noun organic compounds containing an amino group and a carboxylic acid group
  • essential - adj. basic and fundamental absolutely required and not to be used up or sacrificed absolutely necessary; vitally necessarybeing or relating to or containing the essence of a plant etc defining rights and duties as opposed to giving the rules by which rights and duties are established of the greatest importance noun anything indispensable
  • Amino acid - noun organic compounds containing an amino group and a carboxylic acid group
  • nonessential - adj. not of prime or central importance nounanything that is not essential
  • Aminotransferase - noun a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound)
  • Amitriptyline - noun a tricyclic antidepressant drug (trade name Elavil) with serious side effects; interacts with many other medications
  • Ammonia - noun a pungent gas compounded of nitrogen and hydrogen (NH3) a water solution of ammonia
  • Amnesia - noun partial or total loss of memory
  • Amnesia - noun partial or total loss of memory
  • Amnesia - noun partial or total loss of memory
  • anterograde - adj. of amnesia; affecting time immediately following trauma
  • Amnesia - noun partial or total loss of memory
  • retrograde - adj. of amnesia; affecting time immediately preceding trauma moving from east to west on the celestial sphere; or--for planets--around the sun in a direction opposite to that of the Earthgoing from better to worse moving or directed or tending in a backward direction or contrary to a previous direction verb go back over move back move in a direction contrary to the usual onemove backward in an orbit, of celestial bodies get worse or fall back to a previous condition
  • Amnesia - noun partial or total loss of memory
  • Amnesic aphasia - noun inability to name objects or to recognize written or spoken names of objects
  • Amnestic aphasia - noun inability to name objects or to recognize written or spoken names of objects
  • Amniocentesis - noun (pregnancy) extraction by centesis of amniotic fluid from a pregnant woman (after the 15th week of pregnancy) to aid in the diagnosis of fetal abnormalities
  • Amnion - noun thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
  • Amniotic fluid - noun the serous fluid in which the embryo is suspended inside the amnion
  • Amniotic sac - noun thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
  • Amoeba - noun naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion
  • Amok - adj. in a murderous frenzy as if possessed by a demon adv.in a murderous frenzy wildly; without self-control
  • Amphetamine - noun a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
  • Amplification - noun (electronics) the act of increasing voltage or power or current addition of extra material or illustration or clarifying detail the amount of increase in signal power or voltage or current expressed as the ratio of output to input
  • Amplification - noun (electronics) the act of increasing voltage or power or current addition of extra material or illustration or clarifying detail the amount of increase in signal power or voltage or current expressed as the ratio of output to input
  • DNA - noun (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
  • Ampulla - noun a flask that has two handles; used by Romans for wines or oils the dilated portion of a canal or duct especially of the semicircular canals of the ear
  • Amputation - noun a surgical removal of all or part of a limb a condition of disability resulting from the loss of one or more limbs
  • Amuck - adj. in a murderous frenzy as if possessed by a demonadv. in a murderous frenzy wildly; without self-control
  • Amygdala - noun an almond-shaped neural structure in the anterior part of the temporal lobe of the cerebrum; intimately connected with the hypothalamus and the hippocampus and the cingulate gyrus; as part of the limbic system it plays an important role in motivation and emotional behavior
  • Amygdaloid - adj. shaped like an almond noun volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits
  • Amygdaloid nucleus - noun an almond-shaped neural structure in the anterior part of the temporal lobe of the cerebrum; intimately connected with the hypothalamus and the hippocampus and the cingulate gyrus; as part of the limbic system it plays an important role in motivation and emotional behavior
  • Amyl - noun a hydrocarbon radical that occurs in many organic compounds
  • Amylase - noun any of a group of proteins found in saliva and pancreatic juice and parts of plants; help convert starch to sugar
  • Amyloid - adj. resembling starch noun (pathology) a waxy translucent complex protein resembling starch that results from degeneration of tissue a non-nitrogenous food substance consisting chiefly of starch; any substance resembling starch
  • Amyloidosis - noun a disorder characterized by deposit of amyloid in organs or tissues; often secondary to chronic rheumatoid arthritis or tuberculosis or multiple myeloma
  • Amyloidosis - noun a disorder characterized by deposit of amyloid in organs or tissues; often secondary to chronic rheumatoid arthritis or tuberculosis or multiple myeloma
  • hereditary - adj. inherited or inheritable by established rules (usually legal rules) of descent tending to occur among members of a family usually by heredity
  • Amyloidosis - noun a disorder characterized by deposit of amyloid in organs or tissues; often secondary to chronic rheumatoid arthritis or tuberculosis or multiple myeloma
  • primary - adj. not derived from or reducible to something else; basic of first rank or importance or value; direct and immediate rather than secondhand of primary importance most important element of or being the essential or basic part noun a preliminary election where delegates or nominees are chosen one of the main flight feathers projecting along the outer edge of a bird's wing coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit
  • Amyloidosis - noun a disorder characterized by deposit of amyloid in organs or tissues; often secondary to chronic rheumatoid arthritis or tuberculosis or multiple myeloma
  • secondary - adj. belonging to a lower class or rank not of major importance being of second rank or importance or value; not direct or immediate depending on or incidental to what is original or primary inferior in rank or status noun the defensive football players who line up behind the linemen coil such that current is induced in it by passing a current through the primary coil
  • Amyotrophic lateral sclerosis - noun thickening of tissue in the motor tracts of the lateral columns and anterior horns of the spinal cord; results in progressive muscle atrophy that starts in the limbs
  • ALS - noun thickening of tissue in the motor tracts of the lateral columns and anterior horns of the spinal cord; results in progressive muscle atrophy that starts in the limbs
  • An - noun an associate degree in nursing
  • ANA - noun a collection of anecdotes about a person or placemother of the ancient Irish gods; sometimes identified with Danu
  • Anaerobic - adj. living or active in the absence of free oxygen not aerobic
  • Anaesthesia - noun loss of bodily sensation with or without loss of consciousness
  • Analbuminemia - noun an abnormally low level of albumin in the blood serum
  • Analgesia - noun absence of the sense of pain without loss of consciousness
  • Analgesic - adj. capable of relieving pain noun a medicine used to relieve pain
  • Analog - adj. of a circuit or device having an output that is proportional to the input noun something having the property of being analogous to something else
  • Analogous - adj. corresponding in function but not in evolutionary origin similar or equivalent in some respects though otherwise dissimilar
  • Analysis - noun an investigation of the component parts of a whole and their relations in making up the whole the abstract separation of a whole into its constituent parts in order to study the parts and their relations a branch of mathematics involving calculus and the theory of limits; sequences and series and integration and differentiation a form of literary criticism in which the structure of a piece of writing is analyzed the use of closed-class words instead of inflections: e.g., `the father of the bride' instead of `the bride's father' a set of techniques for exploring underlying motives and a method of treating various mental disorders; based on the theories of Sigmund Freud
  • Analysis - noun an investigation of the component parts of a whole and their relations in making up the whole the abstract separation of a whole into its constituent parts in order to study the parts and their relations a branch of mathematics involving calculus and the theory of limits; sequences and series and integration and differentiation a form of literary criticism in which the structure of a piece of writing is analyzed the use of closed-class words instead of inflections: e.g., `the father of the bride' instead of `the bride's father' a set of techniques for exploring underlying motives and a method of treating various mental disorders; based on the theories of Sigmund Freud
  • linkage - noun the act of linking things together a mechanical system of rods or springs or pivots that transmits power or motion(genetics) traits that tend to be inherited together as a consequence of an association between their genes; all of the genes of a given chromosome are linked (where one goes they all go) an associative relation
  • Anaphylactic shock - noun a severe and rapid and sometimes fatal hypersensitivity reaction to a substance (especially a vaccine or penicillin or shellfish or insect venom) to which the organism has become sensitized by previous exposure
  • Anaphylaxis - noun hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance
  • Anaplasmosis - noun a disease of cattle that is transmitted by cattle ticks; similar to Texas fever
  • Anasarca - noun generalized edema with accumulation of serum in subcutaneous connective tissue
  • Anastomosis - noun a natural or surgical joining of parts or branches of tubular structures so as to make or become continuous
  • Anatomy - noun a detailed analysis the branch of morphology that deals with the structure of animals alternative names for the body of a human being
  • Anatomy - noun a detailed analysis the branch of morphology that deals with the structure of animals alternative names for the body of a human being
  • Anatomy - noun a detailed analysis the branch of morphology that deals with the structure of animals alternative names for the body of a human being
  • gross - adj. repellently fat lacking fine distinctions or detail before any deductions conspicuously and outrageously bad or reprehensible conspicuously and tastelessly indecent visible to the naked eye (especially of rocks and anatomical features) without qualification; used informally as (often pejorative) intensifiers nounthe entire amount of income before any deductions are madetwelve dozen verb earn before taxes, expenses, etc.
  • Anatomy - noun a detailed analysis the branch of morphology that deals with the structure of animals alternative names for the body of a human being
  • microscopic - adj. too small to be seen except under a microscopeextremely precise with great attention to details of or relating to or used in microscopy infinitely or immeasurably small
  • Androgen - noun male sex hormone that is produced in the testes and responsible for typical male sexual characteristics
  • complete - adj. having every necessary or normal part or component or step having come or been brought to a conclusionperfect and complete in every respect; having all necessary qualities without qualification; used informally as (often pejorative) intensifiers highly skilled verb bring to a whole, with all the necessary parts or elements come or bring to a finish or an endwrite all the required information onto a form complete a passcomplete or carry out
  • Androgenic - adj. of or related to the male hormone androgen
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • congenital - adj. present at birth but not necessarily hereditary; acquired during fetal development
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • Mediterranean - adj. of or relating to or characteristic of or located near the Mediterranean Sea noun the largest inland sea; between Europe and Africa and Asia
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • pernicious - adj. working or spreading in a hidden and usually injurious way exceedingly harmful
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • refractory - adj. temporarily unresponsive or not fully responsive to nervous or sexual stimuli not responding to treatment stubbornly resistant to authority or control noun lining consisting of material with a high melting point; used to line the inside walls of a furnace
  • Anemia - noun genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America a deficiency of red blood cells a lack of vitality
  • sickle cell - noun an abnormal red blood cell that has a crescent shape and an abnormal form of hemoglobin
  • Anemic - adj. lacking vigor or energy relating to anemia or suffering from anemia
  • Anencephaly - noun a defect in brain development resulting in small or missing brain hemispheres
  • Anergy - noun inactivity and lack of energy reduction or lack of an immune response to a specific antigen
  • Anesthesia - noun loss of bodily sensation with or without loss of consciousness
  • Anesthesia - noun loss of bodily sensation with or without loss of consciousness
  • Anesthesiologist - noun a specialist who administers an anesthetic to a patient before he is treated
  • Anesthesiology - noun the branch of medical science that studies and applies anesthetics
  • Anesthetic - adj. characterized by insensibility noun a drug that causes temporary loss of bodily sensations
  • Anesthetic - adj. characterized by insensibility noun a drug that causes temporary loss of bodily sensations
  • epidural - adj. on or outside the dura mater noun regional anesthesia resulting from injection of an anesthetic into the epidural space of the spinal cord; sensation is lost in the abdominal and genital and pelvic areas; used in childbirth and gynecological surgery
  • Anesthetic - adj. characterized by insensibility noun a drug that causes temporary loss of bodily sensations
  • general - adj. prevailing among and common to the general publicnot specialized or limited to one class of things applying to all or most members of a category or group of national scope affecting the entire body somewhat indefinite of worldwide scope or applicability noun a fact about the whole (as opposed to particular)a general officer of the highest rank the head of a religious order or congregation verb command as a general
  • Anesthetic - adj. characterized by insensibility noun a drug that causes temporary loss of bodily sensations
  • local - adj. relating to or applicable to or concerned with the administration of a city or town or district rather than a larger areaaffecting only a restricted part or area of the body of or belonging to or characteristic of a particular locality or neighborhood noun public transport consisting of a bus or train that stops at all stations or stops anesthetic that numbs a particular area of the body
  • Anesthetist - noun a specialist who administers an anesthetic to a patient before he is treated
  • Aneuploidy - noun an abnormality involving a chromosome number that is not an exact multiple of the haploid number (one chromosome set is incomplete)
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • abdominal - adj. of or relating to or near the abdomen noun the muscles of the abdomen
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • aortic - adj. of or relating to the aorta
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • arterial - adj. of or involving or contained in the arteries
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • berry - noun any of numerous small and pulpy edible fruits; used as desserts or in making jams and jellies and preserves United States rock singer (born in 1931) a small fruit having any of various structures, e.g., simple (grape or blueberry) or aggregate (blackberry or raspberry) verb pick or gather berries
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • brain - noun that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord mental ability the brain of certain animals used as meat that which is responsible for one's thoughts and feelings; the seat of the faculty of reason someone who has exceptional intellectual ability and originality verb kill by smashing someone's skull hit on the head
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • cardiac - adj. of or relating to the heart
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • racemose - adj. having stalked flowers along an elongated stem that continue to open in succession from below as the stem continues to grow
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • renal - adj. of or relating to the kidneys
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • thoracic - adj. of or relating to the chest or thorax
  • Aneurysm - noun a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
  • venous - adj. of or contained in or performing the function of the veins
  • Anger - noun a strong emotion; a feeling that is oriented toward some real or supposed grievance the state of being angrybelligerence aroused by a real or supposed wrong (personified as one of the deadly sins) verb make angry become angry
  • Angiitis - noun inflammation of a blood vessel or lymph duct
  • Angiitis - noun inflammation of a blood vessel or lymph duct
  • Angina - noun any disease of the throat or fauces marked by spasmodic attacks of intense suffocative pain a heart condition marked by paroxysms of chest pain due to reduced oxygen to the heart
  • Angina pectoris - noun a heart condition marked by paroxysms of chest pain due to reduced oxygen to the heart
  • Angina - noun any disease of the throat or fauces marked by spasmodic attacks of intense suffocative pain a heart condition marked by paroxysms of chest pain due to reduced oxygen to the heart
  • Angina - noun any disease of the throat or fauces marked by spasmodic attacks of intense suffocative pain a heart condition marked by paroxysms of chest pain due to reduced oxygen to the heart
  • Angina - noun any disease of the throat or fauces marked by spasmodic attacks of intense suffocative pain a heart condition marked by paroxysms of chest pain due to reduced oxygen to the heart
  • variant - adj. differing from a norm or standard exhibiting or tending to variation and change noun something a little different from others of the same type a variable quantity that is random an event that departs from expectations (biology) a group of organisms within a species that differ in trivial ways from similar groups
  • Angina - noun any disease of the throat or fauces marked by spasmodic attacks of intense suffocative pain a heart condition marked by paroxysms of chest pain due to reduced oxygen to the heart
  • hereditary - adj. inherited or inheritable by established rules (usually legal rules) of descent tending to occur among members of a family usually by heredity
  • Angiogram - noun an X-ray representation of blood vessels made after the injection of a radiopaque substance
  • Angiography - noun roentgenographic examination of blood vessels after injection of a radiopaque contrast medium; produces an angiogram
  • Angiography - noun roentgenographic examination of blood vessels after injection of a radiopaque contrast medium; produces an angiogram
  • coronary - adj. surrounding like a crown (especially of the blood vessels surrounding the heart) noun obstruction of blood flow in a coronary artery by a blood clot (thrombus)
  • Angiography - noun roentgenographic examination of blood vessels after injection of a radiopaque contrast medium; produces an angiogram
  • fluorescein - noun a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed)
  • Angiohemophilia - noun a form of hemophilia discovered by Erik von Willebrand; a genetic disorder that is inherited as an autosomal recessive trait; characterized by a deficiency of the coagulation factor and by mucosal bleeding
  • bacillary - adj. formed like a bacillus relating to or produced by or containing bacilli
  • aggressive - adj. having or showing determination and energetic pursuit of your ends characteristic of an enemy or one eager to fight tending to spread quickly
  • hereditary - adj. inherited or inheritable by established rules (usually legal rules) of descent tending to occur among members of a family usually by heredity
  • Angiopathy - noun any disease of the blood vessels or lymph ducts
  • Angioplasty - noun an operation to repair a damaged blood vessel or unblock a coronary artery
  • Angiosarcoma - noun a rare malignant neoplasm arising from vascular tissue; usually occurs in the breast and skin and is believed to originate from the endothelial cells of blood vessels
  • Angiotensin - noun any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels
  • acute - adj. having or experiencing a rapid onset and short but severe course of critical importance and consequence extremely sharp or intense having or demonstrating ability to recognize or draw fine distinctions of an angle; less than 90 degrees ending in a sharp point noun a mark (') placed above a vowel to indicate pronunciation
  • Angry - adj. feeling or showing anger (of the elements) as if showing violent anger severely inflamed and painful
  • Anhedonia - noun an inability to experience pleasure
  • Aniline - noun oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines
  • Anion - noun a negatively charged ion
  • Anisometropia - noun difference in the refractive power of the two eyes
  • Ankle - noun a gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus
  • Ankle joint - noun a gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus
  • Ankyloglossia - noun a congenital anomaly in which the mucous membrane under the tongue is too short limiting the mobility of the tongue
  • Ankylose - verb undergo ankylosis produce ankylosis by surgery
  • Ankylosing spondylitis - noun a chronic form of spondylitis primarily in males and marked by impaired mobility of the spine; sometimes leads to ankylosis
  • Ankylosis - noun abnormal adhesion and rigidity of the bones of a joint
  • Anlage - noun an organ in its earliest stage of development; the foundation for subsequent development
  • Annotate - verb add explanatory notes to or supply with critical comments provide interlinear explanations for words or phrases
  • Annotation - noun the act of adding notes a comment or instruction (usually added)
  • Annotation - noun the act of adding notes a comment or instruction (usually added)
  • genome - noun the ordering of genes in a haploid set of chromosomes of a particular organism; the full DNA sequence of an organism
  • Annulus - noun (Fungi) remnant of the partial veil that in mature mushrooms surrounds the lower part of the stem a toroidal shape
  • Anomaly - noun (astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun) a person who is unusual deviation from the normal or common order or form or rule
  • Anomaly - noun (astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun) a person who is unusual deviation from the normal or common order or form or rule
  • congenital - adj. present at birth but not necessarily hereditary; acquired during fetal development
  • Anomaly - noun (astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun) a person who is unusual deviation from the normal or common order or form or rule
  • Anomia - noun type genus of the family Anomiidae: saddle oystersinability to name objects or to recognize written or spoken names of objects
  • Anomic aphasia - noun inability to name objects or to recognize written or spoken names of objects
  • Anorectic - adj. causing loss of appetite suffering from anorexia nervosa; pathologically thin noun a person suffering from anorexia nervosa
  • Anorexia - noun a prolonged disorder of eating due to loss of appetite
  • Anorexia nervosa - noun (psychiatry) a psychological disorder characterized by somatic delusions that you are too fat despite being emaciated
  • Anorexia - noun a prolonged disorder of eating due to loss of appetite
  • cancer - noun type genus of the family Cancridae the fourth sign of the zodiac; the sun is in this sign from about June 21 to July 22 a small zodiacal constellation in the northern hemisphere; between Leo and Gemini (astrology) a person who is born while the sun is in Cancer any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream
  • Anorexic - adj. suffering from anorexia nervosa; pathologically thinnoun a person suffering from anorexia nervosa
  • Anorgasmia - noun absence of an orgasm in sexual relations
  • Anosmia - noun absence of the sense of smell (as by damage to olfactory nasal tissue or the olfactory nerve or by obstruction of the nasal passages)
  • Anoxia - noun severe hypoxia; absence of oxygen in inspired gases or in arterial blood or in the tissues
  • Anoxic - adj. relating to or marked by a severe deficiency of oxygen in tissues or organs
  • Ant - noun social insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers
  • fire - noun the act of firing weapons or artillery at an enemy a fireplace in which a relatively small fire is burning intense adverse criticism the event of something burning (often destructive) a severe trial the process of combustion of inflammable materials producing heat and light and (often) smoke once thought to be one of four elements composing the universe (Empedocles) feelings of great warmth and intensity verb bake in a kiln so as to hardencause to go off go off or discharge drive out or away by or as if by fire terminate the employment of destroy by fire start firing a weapon call forth (emotions, feelings, and responses) provide with fuel
  • Antagonist - noun a drug that neutralizes or counteracts the effects of another drug a muscle that relaxes while another contractssomeone who offers opposition
  • Anterior - adj. earlier in time of or near the head end or toward the front plane of the body noun a tooth situated at the front of the mouth
  • Anterior pituitary - noun the anterior lobe of the pituitary body; primarily glandular in nature
  • Anterograde - adj. of amnesia; affecting time immediately following trauma
  • Anterograde amnesia - noun loss of memory for events immediately following a trauma; sometimes in effect for events during and for a long time following the trauma
  • Anthrax - noun a disease of humans that is not communicable; caused by infection with Bacillus anthracis followed by septicemia a highly infectious animal disease (especially cattle and sheep); it can be transmitted to people
  • Anthropology - noun the social science that studies the origins and social relationships of human beings
  • forensic - adj. of, relating to, or used in courts of law or public debate or argument
  • Anti - adj. not in favor of (an action or proposal etc.) noun a person who is opposed (to an action or policy or practice etc.)
  • Antibacterial - adj. destroying bacteria or inhibiting their growthnoun any drug that destroys bacteria or inhibits their growth
  • Antibiotic - adj. of or relating to antibiotic drugs noun a chemical substance derivable from a mold or bacterium that kills microorganisms and cures infections
  • Antibody - noun any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response
  • Antibody - noun any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response
  • Antibody - noun any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response
  • Anticholinergic - adj. inhibiting or blocking the action of acetylcholine at a receptor site noun a substance that opposes or blocks the action of acetylcholine
  • Anticipation - noun something expected (as on the basis of a norm) pleasurable expectation wishing with confidence of fulfillment the act of predicting (as by reasoning about the future)
  • Anticoagulant - noun medicine that prevents or retards the clotting of blood
  • Anticonvulsant - noun a drug used to treat or prevent convulsions (as in epilepsy)
  • Antidepressant - noun any of a class of drugs used to treat depression; often have undesirable side effects
  • Antidepressant - noun any of a class of drugs used to treat depression; often have undesirable side effects
  • MAOI - noun any of a group of antidepressant drugs that inhibit the action of monoamine oxidase in the brain and so allow monoamines to accumulate
  • Antidepressant - noun any of a class of drugs used to treat depression; often have undesirable side effects
  • SSRI - noun an antidepressant drug that acts by blocking the reuptake of serotonin so that more serotonin is available to act on receptors in the brain
  • Antidepressant - noun any of a class of drugs used to treat depression; often have undesirable side effects
  • tricyclic - noun an antidepressant drug that acts by blocking the reuptake of norepinephrine and serotonin and thus making more of those substances available to act on receptors in the brain
  • Antidiuretic hormone - noun hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules
  • ADH - noun hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules
  • Antidote - noun a remedy that stops or controls the effects of a poison
  • Antifungal - adj. capable of destroying fungi noun any agent that destroys or prevents the growth of fungi
  • Antigen - noun any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)
  • Antigen - noun any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)
  • Antimalarial - noun a medicinal drug used to prevent or treat malaria
  • Antimetabolite - noun an antineoplastic drug that inhibits the utilization of a metabolite
  • Antimicrobial - adj. capable of destroying or inhibiting the growth of disease-causing microorganisms noun an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease
  • Antimony - noun a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite
  • Antineoplastic - adj. used in the treatment of cancer noun any of several drugs that control or kill neoplastic cells; used in chemotherapy to kill cancer cells; all have unpleasant side effects that may include nausea and vomiting and hair loss and suppression of bone marrow function
  • Antioxidant - noun substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides
  • Antiparallel - adj. (especially of vectors) parallel but oppositely directed
  • Antiprotozoal - noun a medicinal drug used to fight diseases (like malaria) that are caused by protozoa
  • Antiprotozoal drug - noun a medicinal drug used to fight diseases (like malaria) that are caused by protozoa
  • Antipsychotic - noun tranquilizer used to treat psychotic conditions when a calming effect is desired
  • Antipyretic - adj. preventing or alleviating fever noun any medicine that lowers body temperature to prevent or alleviate fever
  • ART - noun the creation of beautiful or significant things the products of human creativity; works of art collectively a superior skill that you can learn by study and practice and observationphotographs or other visual representations in a printed publication
  • Antisepsis - noun the process of inhibiting the growth and multiplication of microorganisms (of non-living objects) the state of being free of pathogenic organisms
  • Antiseptic - adj. (extended sense) of exceptionally clean languageclean and honest thoroughly clean and free of or destructive to disease-causing organisms made free from live bacteria or other microorganisms freeing from error or corruption noun a substance that destroys micro-organisms that carry disease without harming body tissues
  • Antisocial personality disorder - noun a personality disorder characterized by amorality and lack of affect; capable of violent acts without guilt feelings (`psychopathic personality' was once widely used but was superseded by `sociopathic personality' to indicate the social aspects of the disorder, but now `antisocial personality disorder' is the preferred term)
  • Antispasmodic - noun a drug used to relieve or prevent spasms (especially of the smooth muscles)
  • Antitoxin - noun an antibody that can neutralize a specific toxin
  • Antivenin - noun an antitoxin that counteracts the effects of venom from the bite of a snake or insect or other animal
  • Antiviral - adj. inhibiting or stopping the growth and reproduction of viruses noun any drug that destroys viruses
  • Anton Chekhov - noun Russian dramatist whose plays are concerned with the difficulty of communication between people (1860-1904)
  • Antrum - noun a natural cavity or hollow in a bone
  • fire - noun the act of firing weapons or artillery at an enemy a fireplace in which a relatively small fire is burning intense adverse criticism the event of something burning (often destructive) a severe trial the process of combustion of inflammable materials producing heat and light and (often) smoke once thought to be one of four elements composing the universe (Empedocles) feelings of great warmth and intensity verb bake in a kiln so as to hardencause to go off go off or discharge drive out or away by or as if by fire terminate the employment of destroy by fire start firing a weapon call forth (emotions, feelings, and responses) provide with fuel
  • velvet - adj. resembling velvet in having a smooth soft surfacesmooth and soft to sight or hearing or touch or taste noun a silky densely piled fabric with a plain back
  • Anus - noun excretory opening at the end of the alimentary canal
  • Anus - noun excretory opening at the end of the alimentary canal
  • Anvil - noun a heavy block of iron or steel on which hot metals are shaped by hammering the ossicle between the malleus and the stapes
  • Anxiety - noun a vague unpleasant emotion that is experienced in anticipation of some (usually ill-defined) misfortune a relatively permanent state of anxiety occurring in a variety of mental disorders
  • Anxiety disorder - noun a cover term for a variety of mental disorders in which severe anxiety is a salient symptom
  • Anxiety disorder - noun a cover term for a variety of mental disorders in which severe anxiety is a salient symptom
  • social - adj. marked by friendly companionship with others living together or enjoying life in communities or organized groups tending to move or live together in groups or colonies of the same kindcomposed of sociable people or formed for the purpose of sociability relating to human society and its members relating to or belonging to or characteristic of high society noun a party of people assembled to promote sociability and communal activity
  • Aorta - noun the large trunk artery that carries blood from the left ventricle of the heart to branch arteries
  • Aorta - noun the large trunk artery that carries blood from the left ventricle of the heart to branch arteries
  • abdominal - adj. of or relating to or near the abdomen noun the muscles of the abdomen
  • Aorta - noun the large trunk artery that carries blood from the left ventricle of the heart to branch arteries
  • ascending - adj. moving or going or growing upward noun the act of changing location in an upward direction
  • Aorta - noun the large trunk artery that carries blood from the left ventricle of the heart to branch arteries
  • Aorta - noun the large trunk artery that carries blood from the left ventricle of the heart to branch arteries
  • Aorta - noun the large trunk artery that carries blood from the left ventricle of the heart to branch arteries
  • thoracic - adj. of or relating to the chest or thorax
  • Aortal - adj. of or relating to the aorta
  • Aortic - adj. of or relating to the aorta
  • Aortic arch - noun the part of the aorta that arches and turns downward
  • Aortic valve - noun a semilunar valve between the left ventricle and the aorta; prevents blood from flowing from the aorta back into the heart
  • Aortic valve - noun a semilunar valve between the left ventricle and the aorta; prevents blood from flowing from the aorta back into the heart
  • bicuspid - adj. having two cusps or points (especially a molar tooth) noun a tooth having two cusps or points; located between the incisors and the molars
  • Aortitis - noun inflammation of the aorta
  • X-ray - noun a radiogram made by exposing photographic film to X rays; used in medical diagnosis electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target verb take an x-ray of something or somebody examine by taking x-rays
  • APC - noun a drug combination found in some over-the-counter headache remedies (aspirin and phenacetin and caffeine) (military) an armored vehicle (usually equipped with treads) that is used to transport infantry
  • APC - noun a drug combination found in some over-the-counter headache remedies (aspirin and phenacetin and caffeine) (military) an armored vehicle (usually equipped with treads) that is used to transport infantry
  • gene - noun (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity
  • APC - noun a drug combination found in some over-the-counter headache remedies (aspirin and phenacetin and caffeine) (military) an armored vehicle (usually equipped with treads) that is used to transport infantry
  • immunology - noun the branch of medical science that studies the body's immune system
  • APC - noun a drug combination found in some over-the-counter headache remedies (aspirin and phenacetin and caffeine) (military) an armored vehicle (usually equipped with treads) that is used to transport infantry
  • medication - noun the act of treating with medicines or remedies(medicine) something that treats or prevents or alleviates the symptoms of disease
  • Aperient - adj. mildly laxative noun a purging medicine; stimulates evacuation of the bowels
  • Apex - noun the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars the highest point (of something)
  • Apgar score - noun an assessment of the physical condition of a newborn infant; involves heart rate and muscle tone and respiratory effort and color and reflex responsiveness
  • Aphagia - noun loss of the ability to swallow
  • Aphakia - noun absence of the natural lens of the eye (usually resulting from the removal of cataracts)
  • Aphasia - noun inability to use or understand language (spoken or written) because of a brain lesion
  • Aphasia - noun inability to use or understand language (spoken or written) because of a brain lesion
  • Aphasia - noun inability to use or understand language (spoken or written) because of a brain lesion
  • amnesic - adj. suffering from a partial loss of memory of or relating to or caused by amnesia noun a person suffering from amnesia
  • Aphasia - noun inability to use or understand language (spoken or written) because of a brain lesion
  • amnestic - adj. of or relating to or caused by amnesia
  • Aphasia - noun inability to use or understand language (spoken or written) because of a brain lesion
  • anomic - adj. socially disoriented
  • Aphasia - noun inability to use or understand language (spoken or written) because of a brain lesion
  • nominal - adj. existing in name only insignificantly small; a matter of form only (`tokenish' is informal) being value in terms of specification on currency or stock certificates rather than purchasing power pertaining to a noun or to a word group that functions as a noun relating to or constituting or bearing or giving a name named; bearing the name of a specific person noun a phrase that can function as the subject or object of a verb
  • Aphasia - noun inability to use or understand language (spoken or written) because of a brain lesion
  • Apheresis - noun a procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusion (linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until'
  • Aphonia - noun a disorder of the vocal organs that results in the loss of voice
  • Aphthous ulcer - noun a blister on the mucous membranes of the lips or mouth or gastrointestinal tract
  • Apical - adj. situated at an apex
  • Aplasia - noun failure of some tissue or organ to develop
  • Aplastic anemia - noun anemia characterized by pancytopenia resulting from failure of the bone marrow; can be caused by neoplasm or by toxic exposure
  • Apnea - noun transient cessation of respiration
  • Apnea - noun transient cessation of respiration
  • Apnea - noun transient cessation of respiration
  • Apollo - noun (Greek mythology) Greek god of light; god of prophesy and poetry and music and healing; son of Zeus and Leto; twin brother of Artemis
  • Apoplexy - noun a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain
  • Apoptosis - noun a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival
  • Appendectomy - noun surgical removal of the vermiform appendix
  • Appendix - noun a vestigial process that extends from the lower end of the cecum and that resembles a small pouch supplementary material that is collected and appended at the back of a book
  • Apposition - noun (biology) growth in the thickness of a cell wall by the deposit of successive layers of material a grammatical relation between a word and a noun phrase that follows the act of positioning close together (or side by side)
  • Apraxia - noun inability to make purposeful movements
  • Aqueduct - noun a conduit that resembles a bridge but carries water over a valley
  • Aqueous humor - noun the limpid fluid within the eyeball between the cornea and the lens
  • Arabidopsis thaliana - noun a small invasive self-pollinating weed with small white flowers; much studied by plant geneticists; the first higher plant whose complete genome sequence was described
  • Arbovirus - noun a large heterogeneous group of RNA viruses divisible into groups on the basis of the virions; they have been recovered from arthropods, bats, and rodents; most are borne by arthropods; they are linked by the epidemiologic concept of transmission between vertebrate hosts by arthropod vectors (mosquitoes, ticks, sandflies, midges, etc.) that feed on blood; they can cause mild fevers, hepatitis, hemorrhagic fever, and encephalitis
  • Arch - adj. expert in skulduggery (used of behavior or attitude) characteristic of those who treat others with condescension noun(architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it a passageway under a curved masonry construction a curved bony structure supporting or enclosing organs (especially the inner sides of the feet) a curved shape in the vertical plane that spans an opening verb form an arch or curve
  • aortic - adj. of or relating to the aorta
  • Arch - adj. expert in skulduggery (used of behavior or attitude) characteristic of those who treat others with condescension noun(architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it a passageway under a curved masonry construction a curved bony structure supporting or enclosing organs (especially the inner sides of the feet) a curved shape in the vertical plane that spans an opening verb form an arch or curve
  • vertebral - adj. of or relating to or constituting vertebrae
  • Arch - adj. expert in skulduggery (used of behavior or attitude) characteristic of those who treat others with condescension noun(architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it a passageway under a curved masonry construction a curved bony structure supporting or enclosing organs (especially the inner sides of the feet) a curved shape in the vertical plane that spans an opening verb form an arch or curve
  • zygomatic - adj. of or relating to the cheek region of the face nounthe arch of bone beneath the eye that forms the prominence of the cheek
  • Archaeology - noun the branch of anthropology that studies prehistoric people and their cultures
  • Arcus senilis - noun an whitish deposit in the shape of an arc that is sometimes seen in the cornea
  • ARDS - noun acute lung injury characterized by coughing and rales; inflammation of the lungs which become stiff and fibrous and cannot exchange oxygen; occurs among persons exposed to irritants such as corrosive chemical vapors or ammonia or chlorine etc.
  • Areflexia - noun absence of a reflex; a sign of possible nerve damage
  • Arenaviridae - noun a family of arborviruses carried by arthropods
  • Arenavirus - noun animal viruses belonging to the family Arenaviridae
  • Areola - noun small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite small space in a tissue or body part such as the area between veins on a leaf or an insect's wing
  • Arginine - noun a bitter tasting amino acid found in proteins and necessary for nutrition; its absence from the diet leads to a reduced production of spermatozoa
  • Aristotle - noun one of the greatest of the ancient Athenian philosophers; pupil of Plato; teacher of Alexander the Great (384-322 BC)
  • Arm - noun the part of an armchair or sofa that supports the elbow and forearm of a seated person any projection that is thought to resemble a human arm a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb the part of a garment that is attached at the armhole and that provides a cloth covering for the arm any instrument or instrumentality used in fighting or hunting an administrative division of some larger or more complex organizationverb prepare oneself for a military confrontation supply with arms
  • ARM - noun the part of an armchair or sofa that supports the elbow and forearm of a seated person any projection that is thought to resemble a human arm a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb the part of a garment that is attached at the armhole and that provides a cloth covering for the arm any instrument or instrumentality used in fighting or hunting an administrative division of some larger or more complex organizationverb prepare oneself for a military confrontation supply with arms
  • Arms - noun the official symbols of a family, state, etc. weapons considered collectively
  • Arrhythmia - noun an abnormal rate of muscle contractions in the heart
  • Arrhythmia - noun an abnormal rate of muscle contractions in the heart
  • sinus - noun any of various air-filled cavities especially in the bones of the skull a wide channel containing blood; does not have the coating of an ordinary blood vessel an abnormal passage leading from a suppurating cavity to the body surface
  • atrial - adj. of or relating to a cavity or chamber in the body (especially one of the upper chambers of the heart)
  • rapid - adj. done or occurring in a brief period of time characterized by speed; moving with or capable of moving with high speed noun a part of a river where the current is very fast
  • slow - adj. not moving quickly; taking a comparatively long time at a slow tempo (used of timepieces) indicating a time earlier than the correct time (of business) not active or brisk slow to learn or understand; lacking intellectual acuity so lacking in interest as to cause mental weariness adv. without speed (`slow' is sometimes used informally for `slowly') of timepieces verb become slow or slower cause to proceed more slowly lose velocity; move more slowly
  • ventricular - adj. of or relating to a ventricle (of the heart or brain)
  • Arsenic - noun a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer
  • Arsine - noun a poisonous colorless flammable gas used in organic synthesis and to dope transistors and as a poison gas in warfare
  • ART - noun the creation of beautiful or significant things the products of human creativity; works of art collectively a superior skill that you can learn by study and practice and observationphotographs or other visual representations in a printed publication
  • Arteria femoralis - noun the chief artery of the thigh; a continuation of the external iliac artery
  • coronary - adj. surrounding like a crown (especially of the blood vessels surrounding the heart) noun obstruction of blood flow in a coronary artery by a blood clot (thrombus)
  • Arteriogram - noun an X ray of an artery filled with a contrast medium
  • Arteriole - noun one of the small thin-walled arteries that end in capillaries
  • cranial - adj. of or relating to the cranium which encloses the brain
  • temporal - adj. of this earth or world not eternal concerned with secular rather than sacred matters of the material world of or relating to the temples (the sides of the skull behind the orbit) of or relating to or limited by time noun the semantic role of the noun phrase that designating the time of the state or action denoted by the verb
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • coronary - adj. surrounding like a crown (especially of the blood vessels surrounding the heart) noun obstruction of blood flow in a coronary artery by a blood clot (thrombus)
  • coronary - adj. surrounding like a crown (especially of the blood vessels surrounding the heart) noun obstruction of blood flow in a coronary artery by a blood clot (thrombus)
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • brachial - adj. of or relating to an arm
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • carotid - adj. of or relating to either of the two major arteries supplying blood to the head and neck
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • femoral - adj. of or relating to or near the femur or thigh
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • hepatic - adj. pertaining to or affecting the liver noun any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • mesenteric - adj. of or relating to or located in a mesentery
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • ophthalmic - adj. of or relating to ophthalmology of or relating to the eye
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • pulmonary - adj. relating to or affecting the lungs
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • splenic - adj. of or relating to the spleen
  • Artery - noun a major thoroughfare that bears important traffic a blood vessel that carries blood from the heart to the body
  • vertebral - adj. of or relating to or constituting vertebrae
  • Arthritis - noun inflammation of a joint or joints
  • Arthritis - noun inflammation of a joint or joints
  • degenerative - adj. (of illness) marked by gradual deterioration of organs and cells along with loss of function
  • Arthritis - noun inflammation of a joint or joints
  • gout - noun a painful inflammation of the big toe and foot caused by defects in uric acid metabolism resulting in deposits of the acid and its salts in the blood and joints
  • Arthritis - noun inflammation of a joint or joints
  • Arthritis - noun inflammation of a joint or joints
  • Arthritis - noun inflammation of a joint or joints
  • reactive - adj. participating readily in reactions tending to react to a stimulus
  • Arthritis - noun inflammation of a joint or joints
  • Reiter - noun German bacteriologist who described a disease now known as Reiter's syndrome and who identified the spirochete that causes syphilis in humans (1881-1969)
  • Arthritis - noun inflammation of a joint or joints
  • Arthritis - noun inflammation of a joint or joints
  • spondylitis - noun inflammation of a spinal joint; characterized by pain and stiffness
  • Arthritis - noun inflammation of a joint or joints
  • Arthritis - noun inflammation of a joint or joints
  • Arthrogram - noun an X ray of a joint after the injection of a contrast medium
  • Arthropathy - noun a pathology or abnormality of a joint
  • Arthroscope - noun a type of endoscope that is inserted into a joint for visual examination
  • Arthroscopy - noun a minimally invasive operation to repair a damaged joint; the surgeon examines the joint with an arthroscope while making repairs through a small incision
  • Articulation - noun the act of joining things in such a way that motion is possible expressing in coherent verbal form the aspect of pronunciation that involves bringing articulatory organs together so as to shape the sounds of speech the shape or manner in which things come together and a connection is made (anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)
  • principal - adj. most important element noun the major party to a financial transaction at a stock exchange; buys and sells for his own account the educator who has executive authority for a schoolcapital as contrasted with the income derived from it the original amount of a debt on which interest is calculated an actor who plays a principal role
  • Artificial insemination - noun the introduction of semen into the oviduct or uterus by some means other than sexual intercourse
  • AID - noun the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose a resource a gift of money to support a worthy person or cause the work of providing treatment for or attending to someone or something verb improve the condition of give help or assistance; be of service
  • Artificial pacemaker - noun an implanted electronic device that takes over the function of the natural cardiac pacemaker
  • Asbestos - noun a fibrous amphibole; used for making fireproof articles; inhaling fibers can cause asbestosis or lung cancer
  • Asbestosis - noun lung disease caused by inhaling asbestos particles
  • Ascariasis - noun infestation of the human intestine with Ascaris roundworms
  • Ascaris - noun type genus of the family Ascaridae: roundworms with a three-lipped mouth
  • Ascending aorta - noun the ascending part of the aorta as it emerges from the left ventricle
  • Ascites - noun accumulation of serous fluid in peritoneal cavity
  • Asclepius - noun son of Apollo; a hero and the Roman god of medicine and healing; his daughters were Hygeia and Panacea
  • Ascorbic acid - noun a vitamin found in fresh fruits (especially citrus fruits) and vegetables; prevents scurvy
  • Ascus - noun saclike structure in which ascospores are formed through sexual reproduction of ascomycetes
  • ASCUS - noun saclike structure in which ascospores are formed through sexual reproduction of ascomycetes
  • Aseptic - adj. free of or using methods to keep free of pathological microorganisms
  • Asexual - adj. not having or involving sex
  • Asian influenza - noun influenza caused by the Asian virus that was first isolated in 1957
  • ASL - noun the sign language used in the United States
  • Asp - noun cobra used by the Pharaohs as a symbol of their power over life and death of southern Europe; similar to but smaller than the adder
  • Asparagine - noun a crystalline amino acid found in proteins and in many plants (e.g., asparagus)
  • Aspartame - noun an artificial sweetener made from aspartic acid; used as a calorie-free sweetener
  • Aspartic acid - noun a crystalline amino acid found in proteins and occurring naturally in sugar beets and sugar cane
  • Aspergillosis - noun disease especially in agricultural workers caused by inhalation of Aspergillus spores causing lumps in skin and ears and respiratory organs an opportunistic infection by a fungus of the genus Aspergillus; characterized by inflammation and lesions of the ear and other organs severe respiratory disease of birds that takes the form of an acute rapidly fatal pneumonia in young chickens and turkeys
  • Aspergillus - noun genus of common molds causing food spoilage and some pathogenic to plants and animals
  • Asphyxia - noun a condition in which insufficient or no oxygen and carbon dioxide are exchanged on a ventilatory basis; caused by choking or drowning or electric shock or poison gas
  • Aspirate - noun a consonant pronounced with aspiration verb suck in (air) pronounce with aspiration; of stop sounds remove as if by suction
  • Aspiration - noun a will to succeed a manner of articulation involving an audible release of breath the act of inhaling; the drawing in of air (or other gases) as in breathing a cherished desire
  • Aspiration pneumonia - noun inflammation of the lungs caused by inhaling or choking on vomitus; may occur during unconsciousness (anesthesia or drunkenness or seizure or cardiac arrest)
  • Aspiration - noun a will to succeed a manner of articulation involving an audible release of breath the act of inhaling; the drawing in of air (or other gases) as in breathing a cherished desire
  • Aspiration - noun a will to succeed a manner of articulation involving an audible release of breath the act of inhaling; the drawing in of air (or other gases) as in breathing a cherished desire
  • joint - adj. involving both houses of a legislature united or combined affecting or involving two or more noun marijuana leaves rolled into a cigarette for smoking junction by which parts or objects are joined together a disreputable place of entertainment(anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion) a piece of meat roasted or for roasting and of a size for slicing into more than one portion the shape or manner in which things come together and a connection is made verb separate (meat) at the joint fasten with a joint provide with a joint fit as if by joints
  • Aspirin - noun the acetylated derivative of salicylic acid; used as an analgesic anti-inflammatory drug (trade names Bayer and Empirin) usually taken in tablet form; used as an antipyretic; slows clotting of the blood by poisoning platelets
  • Assay - noun a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc. an appraisal of the state of affairs a written report of the results of an analysis of the composition of some substance a substance that is undergoing an analysis of its components verbanalyze (chemical substances) make an effort or attempt
  • Assay - noun a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc. an appraisal of the state of affairs a written report of the results of an analysis of the composition of some substance a substance that is undergoing an analysis of its components verbanalyze (chemical substances) make an effort or attempt
  • Assay - noun a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc. an appraisal of the state of affairs a written report of the results of an analysis of the composition of some substance a substance that is undergoing an analysis of its components verbanalyze (chemical substances) make an effort or attempt
  • Assembly - noun the social act of assembling a group of machine parts that fit together to form a self-contained unit a group of persons gathered together for a common purpose the act of constructing something (as a piece of machinery) a public facility to meet for open discussion
  • DNA - noun (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
  • Assistant - adj. of or relating to a person who is subordinate to another noun a person who contributes to the fulfillment of a need or furtherance of an effort or purpose
  • physician - noun a licensed medical practitioner
  • PA - noun an electronic amplification system used as a communication system in public areas a Mid-Atlantic state; one of the original 13 colonies an informal term for a father; probably derived from baby talk a unit of pressure equal to one newton per square meter a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
  • Assisted suicide - noun suicide of a terminally ill person that involves an assistant who serves to make dying as painless and dignified as possible
  • Association - noun the act of consorting with or joining with othersthe process of bringing ideas or events together in memory or imagination (ecology) a group of organisms (plants and animals) that live together in a certain geographical region and constitute a community with a few dominant species a formal organization of people or groups of people (chemistry) any process of combination (especially in solution) that depends on relatively weak chemical bonding a relation resulting from interaction or dependence the state of being connected together as in memory or imagination a social or business relationship
  • Association - noun the act of consorting with or joining with othersthe process of bringing ideas or events together in memory or imagination (ecology) a group of organisms (plants and animals) that live together in a certain geographical region and constitute a community with a few dominant species a formal organization of people or groups of people (chemistry) any process of combination (especially in solution) that depends on relatively weak chemical bonding a relation resulting from interaction or dependence the state of being connected together as in memory or imagination a social or business relationship
  • Asthenia - noun an abnormal loss of strength
  • Asthenic - adj. having a slender physique lacking strength or vigor
  • Asthma - noun respiratory disorder characterized by wheezing; usually of allergic origin
  • Asthma - noun respiratory disorder characterized by wheezing; usually of allergic origin
  • Asthma - noun respiratory disorder characterized by wheezing; usually of allergic origin
  • Asthma - noun respiratory disorder characterized by wheezing; usually of allergic origin
  • Asthmatic - adj. relating to breathing with a whistling sound noun a person suffering from asthma
  • Astigmatic - adj. of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images
  • Astigmatism - noun (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea
  • Astraphobia - noun a morbid fear of thunder and lightning
  • Asymptomatic - adj. having no symptoms of illness or disease
  • Asystole - noun absence of systole; failure of the ventricles of the heart to contract (usually caused by ventricular fibrillation) with consequent absence of the heart beat leading to oxygen lack and eventually to death
  • AT - noun 100 at equal 1 kip in Laos a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
  • Ataxia - noun inability to coordinate voluntary muscle movements; unsteady movements and staggering gait
  • Ataxia - noun inability to coordinate voluntary muscle movements; unsteady movements and staggering gait
  • cerebellar - adj. relating to or associated with the cerebellum
  • Atelectasis - noun collapse of an expanded lung (especially in infants); also failure of pulmonary alveoli to expand at birth
  • Atelectasis - noun collapse of an expanded lung (especially in infants); also failure of pulmonary alveoli to expand at birth
  • primary - adj. not derived from or reducible to something else; basic of first rank or importance or value; direct and immediate rather than secondhand of primary importance most important element of or being the essential or basic part noun a preliminary election where delegates or nominees are chosen one of the main flight feathers projecting along the outer edge of a bird's wing coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit
  • Atelectasis - noun collapse of an expanded lung (especially in infants); also failure of pulmonary alveoli to expand at birth
  • secondary - adj. belonging to a lower class or rank not of major importance being of second rank or importance or value; not direct or immediate depending on or incidental to what is original or primary inferior in rank or status noun the defensive football players who line up behind the linemen coil such that current is induced in it by passing a current through the primary coil
  • Atherogenesis - noun the formation of atheromas on the walls of the arteries as in atherosclerosis
  • Atheroma - noun a fatty deposit in the intima (inner lining) of an artery; can obstruct blood flow
  • Atherosclerosis - noun a stage of arteriosclerosis involving fatty deposits (atheromas) inside the arterial walls
  • Athetosis - noun a continuous succession of slow, writhing, involuntary movements of the hands and feet and other body parts
  • Atlas - noun a figure of a man used as a supporting column the 1st cervical vertebra a collection of maps in book form (Greek mythology) a Titan who was forced by Zeus to bear the sky on his shoulders
  • ATM - noun an unattended machine (outside some banks) that dispenses money when a personal coded card is used a means of digital communications that is capable of very high speeds; suitable for transmission of images or voice or video as well as data a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade
  • Atom - noun (nontechnical usage) a tiny piece of anything (physics and chemistry) the smallest component of an element having the chemical properties of the element
  • Atonia - noun lack of normal muscular tension or tonus
  • REM sleep - noun a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep
  • Atonic - adj. used of syllables characterized by a lack of tonus
  • Atopy - noun an allergic reaction that becomes apparent in a sensitized person only minutes after contact
  • ATP - noun a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions
  • Atresia - noun an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent
  • Atresia - noun an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent
  • anal - adj. a stage in psychosexual development when the child's interest is concentrated on the anal region; fixation at this stage is said to result in orderliness, meanness, stubbornness, compulsiveness, etc. of or related to the anus
  • Atresia - noun an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent
  • aortic - adj. of or relating to the aorta
  • Atresia - noun an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent
  • biliary - adj. relating to the bile ducts or the gallbladder relating to or containing bile
  • Atrial - adj. of or relating to a cavity or chamber in the body (especially one of the upper chambers of the heart)
  • Atrioventricular - adj. relating to or affecting the atria and ventricles of the heart
  • AV - noun the eleventh month of the civil year; the fifth month of the ecclesiastical year in the Jewish calendar (in July and August)
  • Atrioventricular node - noun a node of specialized heart muscle located in the septal wall of the right atrium; receives impulses from the sinoatrial node and transmits them to atrioventricular bundle
  • Atrium - noun the central area in a building; open to the sky any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)
  • Atrophy - noun any weakening or degeneration (especially through lack of use) a decrease in size of an organ caused by disease or disuse verb undergo atrophy
  • Atrophy - noun any weakening or degeneration (especially through lack of use) a decrease in size of an organ caused by disease or disuse verb undergo atrophy
  • Atropine - noun a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve agents or organophosphate insecticides
  • Attack - noun a decisive manner of beginning a musical tone or phrase an offensive move in a sport or game the act of attacking(military) an offensive against an enemy (using weapons) strong criticism the onset of a corrosive or destructive process (as by a chemical agent) a sudden occurrence of an uncontrollable condition ideas or actions intended to deal with a problem or situation intense adverse criticism verb begin to injure set to work upon; turn one's energies vigorously to a task attack in speech or writing take the initiative and go on the offensive launch an attack or assault on; begin hostilities or start warfare with attack someone physically or emotionally
  • Attention - noun a courteous act indicating affection a motionless erect stance with arms at the sides and feet together; assumed by military personnel during drill or review the faculty or power of mental concentration the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others a general interest that leads people to want to know morethe work of providing treatment for or attending to someone or something
  • ADD - noun a condition (mostly in boys) characterized by behavioral and learning disorders verb make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope ofmake an addition by combining numbers state or say furtherconstitute an addition determine the sum of bestow a quality on
  • Attenuate - adj. reduced in strength verb become weaker, in strength, value, or magnitude weaken the consistency of (a chemical substance)
  • Attenuated - adj. of an electrical signal; reduced in amplitude with little or no distortion reduced in strength
  • Atypical - adj. deviating from normal expectations; somewhat odd, strange, or abnormal not representative of a group, class, or type
  • Audiogram - noun a graphical representation of a person's auditory sensitivity to sound
  • Audiometry - noun measuring sensitivity of hearing the measurement of hearing
  • Auditory aphasia - noun an impairment in understanding spoken language that is not attributable to hearing loss
  • Auditory cortex - noun the cortical area that receives auditory information from the medial geniculate body
  • central - adj. in or near a center or constituting a center; the inner area centrally located and easy to reach used in the description of a place that in the middle of another place serving as an essential component noun a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication
  • Auditory tube - noun either of the paired tubes connecting the middle ears to the nasopharynx; equalizes air pressure on the two sides of the eardrum
  • Aura - noun an indication of radiant light drawn around the head of a saint a sensation (as of a cold breeze or bright light) that precedes the onset of certain disorders such as a migraine attack or epileptic seizure a distinctive but intangible quality surrounding a person or thing
  • Auricle - noun the externally visible cartilaginous structure of the external ear a small conical pouch projecting from the upper anterior part of each atrium of the heart
  • Auricular - adj. pertaining to an auricle of the heart relating to or perceived by or shaped like the organ of hearing of or relating to near the ear
  • Autism - noun (psychiatry) an abnormal absorption with the self; marked by communication disorders and short attention span and inability to treat others as people
  • Autoantibody - noun an antibody acting against tissues of the organism that produces it
  • Autochthonous - adj. of rocks, deposits, etc.; found where they and their constituents were formed originating where it is found
  • Autoclave - noun a device for heating substances above their boiling point; used to manufacture chemicals or to sterilize surgical instruments verb subject to the action of an autoclave
  • Autograft - noun tissue that is taken from one site and grafted to another site on the same person
  • Autoimmune - adj. of or relating to the immune response of the body against substance normally present in the body
  • Autoimmune disease - noun any of a large group of diseases characterized by abnormal functioning of the immune system that causes your immune system to produce antibodies against your own tissues
  • ALPS - noun a large mountain system in south-central Europe; scenic beauty and winter sports make them a popular tourist attraction
  • Autoimmunity - noun production of antibodies against the tissues of your own body; produces autoimmune disease or hypersensitivity reactions
  • Autologous - adj. derived from organisms of the selfsame individual
  • Autolysis - noun lysis of plant or animal tissue by an internal process
  • Automatism - noun any reaction that occurs automatically without conscious thought or reflection (especially the undirected behavior seen in psychomotor epilepsy)
  • Autonomic nervous system - noun the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands
  • Autonomy - noun immunity from arbitrary exercise of authority: political independence personal independence
  • patient - adj. enduring without protest or complaint enduring trying circumstances with even temper or characterized by such endurance noun a person who requires medical care the semantic role of an entity that is not the agent but is directly involved in or affected by the happening denoted by the verb in the clause
  • Autopsy - noun an examination and dissection of a dead body to determine cause of death or the changes produced by disease verbperform an autopsy on a dead body; do a post-mortem
  • Autoradiography - noun producing a radiograph by means of the radiation emitted from the specimen being photographed
  • Autosomal - adj. of or relating to an autosome
  • Autosome - noun any chromosome that is not a sex chromosome; appear in pairs in body cells but as single chromosomes in spermatozoa
  • AV - noun the eleventh month of the civil year; the fifth month of the ecclesiastical year in the Jewish calendar (in July and August)
  • atrioventricular - adj. relating to or affecting the atria and ventricles of the heart
  • Avulse - verb separate by avulsion
  • Avulsion - noun a forcible tearing or surgical separation of one body part from another an abrupt change in the course of a stream that forms the boundary between two parcels of land resulting in the loss of part of the land of one landowner and a consequent increase in the land of another
  • Avuncular - adj. like an uncle in kindness or indulgence being or relating to an uncle
  • computerized - adj. stored, processed, analyzed, or generated by computer
  • Axilla - noun the hollow under the arm where it is joined to the shoulder
  • Axillary - adj. of or relating to the armpit of or relating to the axil
  • Axis - noun the center around which something rotates the 2nd cervical vertebra; serves as a pivot for turning the head a straight line through a body or figure that satisfies certain conditions in World War II the alliance of Germany and Italy in 1936 which later included Japan and other nations the main stem or central part about which plant organs or plant parts such as branches are arranged a group of countries in special alliance
  • Axon - noun long nerve fiber that conducts away from the cell body of the neuron
  • Ayurveda - noun (Sanskrit) an ancient medical treatise summarizing the Hindu art of healing and prolonging life; sometimes regarded as a 5th Veda
  • Azotemia - noun accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine
  • AZT - noun an antiviral drug (trade name Retrovir) used in the treatment of AIDS; adverse side effects include liver damage and suppression of the bone marrow

Table of contents:

.A | .B | .C | .D | .E | .F | .G | .H | .I | .J | .K | .L | .M

.N | .O | .P | .Q | .R | .S | .T | .U | .V | .W | .X | .Y | .Z

B

  • B cell - noun a lymphocyte derived from bone marrow that provides humoral immunity; it recognizes free antigen molecules in solution and matures into plasma cells that secrete immunoglobulin (antibodies) that inactivate the antigens
  • B - noun the blood group whose red cells carry the B antigen the 2nd letter of the Roman alphabet aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter a logarithmic unit of sound intensity equal to 10 decibels a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder originally thought to be a single vitamin but now separated into several B vitamins
  • a - noun the blood group whose red cells carry the A antigen the 1st letter of the Roman alphabet the basic unit of electric current adopted under the Systeme International d'Unites a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose) any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
  • P - noun the 16th letter of the Roman alphabet a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms
  • B - noun the blood group whose red cells carry the B antigen the 2nd letter of the Roman alphabet aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter a logarithmic unit of sound intensity equal to 10 decibels a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder originally thought to be a single vitamin but now separated into several B vitamins
  • B - noun the blood group whose red cells carry the B antigen the 2nd letter of the Roman alphabet aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter a logarithmic unit of sound intensity equal to 10 decibels a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder originally thought to be a single vitamin but now separated into several B vitamins
  • B - noun the blood group whose red cells carry the B antigen the 2nd letter of the Roman alphabet aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter a logarithmic unit of sound intensity equal to 10 decibels a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder originally thought to be a single vitamin but now separated into several B vitamins
  • B - noun the blood group whose red cells carry the B antigen the 2nd letter of the Roman alphabet aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter a logarithmic unit of sound intensity equal to 10 decibels a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder originally thought to be a single vitamin but now separated into several B vitamins
  • b - noun the blood group whose red cells carry the B antigen the 2nd letter of the Roman alphabet aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter a logarithmic unit of sound intensity equal to 10 decibels a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder originally thought to be a single vitamin but now separated into several B vitamins
  • i - noun the 9th letter of the Roman alphabet a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)
  • d - noun the 4th letter of the Roman alphabet a fat-soluble vitamin that prevents rickets
  • Ba - noun a bachelor's degree in arts and sciences a soft silvery metallic element of the alkali earth group; found in barite
  • Babinski reflex - noun extension upward of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front; normal in infants under the age of two years but a sign of brain or spinal cord injury in older persons
  • Babinski sign - noun extension upward of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front; normal in infants under the age of two years but a sign of brain or spinal cord injury in older persons
  • Baby-walker - noun an enclosing framework on casters or wheels; helps babies learn to walk
  • Baby - noun a project of personal concern to someone a very young mammal (slang) sometimes used as a term of address for attractive young women the youngest member of a group (not necessarily young) a very young child (birth to 1 year) who has not yet begun to walk or talk an immature childish person verb treat with excessive indulgence
  • fetal alcohol syndrome - noun a medical condition in which body deformation or facial development or mental ability of a fetus is impaired because the mother drank alcohol while pregnant
  • Bacillus - noun aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
  • Bacillus anthracis - noun a species of bacillus that causes anthrax in humans and in animals (cattle and swine and sheep and rabbits and mice and guinea pigs); can be used a bioweapon
  • low - adj. literal meanings; being at or having a relatively small elevation or upward extension less than normal in degree or intensity or amount used of sounds and voices; low in pitch or frequency very low in volume unrefined in character being the gear producing the lowest drive speed low in spirits of the most contemptible kind subdued or brought low in condition or status no longer sufficient low or inferior in station or quality adv. in a low position; near the ground noun a low level or position or degreeBritish political cartoonist (born in New Zealand) who created the character Colonel Blimp (1891-1963) an air mass of lower pressure; often brings precipitation the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving verb make a low noise, characteristic of bovines
  • Backbone - noun the part of a network that connects other networks together fortitude and determination the part of a book's cover that encloses the inner side of the book's pages and that faces outward when the book is shelved the series of vertebrae forming the axis of the skeleton and protecting the spinal cord a central cohesive source of support and stability
  • Bacteremia - noun transient presence of bacteria (or other microorganisms) in the blood
  • Bacteria - noun (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered plants
  • Bacterial - adj. relating to or caused by bacteria
  • acute - adj. having or experiencing a rapid onset and short but severe course of critical importance and consequence extremely sharp or intense having or demonstrating ability to recognize or draw fine distinctions of an angle; less than 90 degrees ending in a sharp point noun a mark (') placed above a vowel to indicate pronunciation
  • chronic - adj. being long-lasting and recurrent or characterized by long suffering
  • Bacteriology - noun the branch of medical science that studies bacteria in relation to disease
  • Bacterium - noun (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered plants
  • Bag - noun a flexible container with a single opening a portable rectangular container for carrying clothes a container used for carrying money and small personal items or accessories (especially by women) an ugly or ill-tempered woman the quantity of game taken in a particular period (usually by one person) the quantity that a bag will hold an activity that you like or at which you are superiormammary gland of bovids (cows and sheep and goats) place that runner must touch before scoring verb capture or kill, as in huntingput into a bag hang loosely, like an empty bag take unlawfullybulge out; form a bulge outward, or be so full as to appear to bulge
  • air - adj. relating to or characteristic of or occurring in the air noun a distinctive but intangible quality surrounding a person or thingmedium for radio and television broadcasting the region above the ground a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of once thought to be one of four elements composing the universe (Empedocles) travel via aircraft a succession of notes forming a distinctive sequence the mass of air surrounding the Earth a slight wind (usually refreshing)verb expose to warm or heated air, so as to dry broadcast over the airwaves, as in radio or television be broadcast expose to cool or cold air so as to cool or freshen make public expose to fresh air
  • Balance - noun a scale for weighing; depends on pull of gravityequality between the totals of the credit and debit sides of an account the difference between the totals of the credit and debit sides of an account equality of distribution a state of equilibrium a wheel that regulates the rate of movement in a machine; especially a wheel oscillating against the hairspring of a timepiece to regulate its beat a weight that balances another weight (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane harmonious arrangement or relation of parts or elements within a whole (as in a design) the seventh sign of the zodiac; the sun is in this sign from about September 23 to October 22 (astrology) a person who is born while the sun is in Libra something left after other parts have been taken away verbcompute credits and debits of an account bring into balance or equilibrium be in equilibrium hold or carry in equilibrium
  • Balance - noun a scale for weighing; depends on pull of gravityequality between the totals of the credit and debit sides of an account the difference between the totals of the credit and debit sides of an account equality of distribution a state of equilibrium a wheel that regulates the rate of movement in a machine; especially a wheel oscillating against the hairspring of a timepiece to regulate its beat a weight that balances another weight (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane harmonious arrangement or relation of parts or elements within a whole (as in a design) the seventh sign of the zodiac; the sun is in this sign from about September 23 to October 22 (astrology) a person who is born while the sun is in Libra something left after other parts have been taken away verbcompute credits and debits of an account bring into balance or equilibrium be in equilibrium hold or carry in equilibrium
  • Balance - noun a scale for weighing; depends on pull of gravityequality between the totals of the credit and debit sides of an account the difference between the totals of the credit and debit sides of an account equality of distribution a state of equilibrium a wheel that regulates the rate of movement in a machine; especially a wheel oscillating against the hairspring of a timepiece to regulate its beat a weight that balances another weight (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane harmonious arrangement or relation of parts or elements within a whole (as in a design) the seventh sign of the zodiac; the sun is in this sign from about September 23 to October 22 (astrology) a person who is born while the sun is in Libra something left after other parts have been taken away verbcompute credits and debits of an account bring into balance or equilibrium be in equilibrium hold or carry in equilibrium
  • Balanitis - noun inflammation of the head of the penis
  • Balanitis - noun inflammation of the head of the penis
  • Balanoposthitis - noun inflammation of both the head of the penis and the foreskin
  • Baldness - noun the condition of having no hair on the top of the head
  • Baldness - noun the condition of having no hair on the top of the head
  • patchy - adj. irregular or uneven in quality, texture, etc.
  • Band - noun a thin flat strip of flexible material that is worn around the body or one of the limbs (especially to decorate the body) an adornment consisting of a strip of a contrasting color or material a restraint put around something to hold it together a strip of material attached to the leg of a bird to identify it (as in studies of bird migration) a thin flat strip or loop of flexible material that goes around or over something else a stripe or stripes of contrasting color a range of frequencies between two limits instrumentalists not including string players jewelry consisting of a circlet of precious metal (often set with jewels) worn on the finger a cord-like tissue connecting two larger parts of an anatomical structure an unofficial association of people or groups a group of musicians playing popular music for dancing verb bind or tie together, as with a bandattach a ring to the foot of, in order to identify
  • chromosome - noun a threadlike body in the cell nucleus that carries the genes in a linear order
  • Band - noun a thin flat strip of flexible material that is worn around the body or one of the limbs (especially to decorate the body) an adornment consisting of a strip of a contrasting color or material a restraint put around something to hold it together a strip of material attached to the leg of a bird to identify it (as in studies of bird migration) a thin flat strip or loop of flexible material that goes around or over something else a stripe or stripes of contrasting color a range of frequencies between two limits instrumentalists not including string players jewelry consisting of a circlet of precious metal (often set with jewels) worn on the finger a cord-like tissue connecting two larger parts of an anatomical structure an unofficial association of people or groups a group of musicians playing popular music for dancing verb bind or tie together, as with a bandattach a ring to the foot of, in order to identify
  • Q - noun the 17th letter of the Roman alphabet
  • Bar chart - noun a chart with bars whose lengths are proportional to quantities
  • Bar graph - noun a chart with bars whose lengths are proportional to quantities
  • Barium - noun a soft silvery metallic element of the alkali earth group; found in barite
  • Barium enema - noun contrast medium is injected into the rectum and x-rays are taken to search for lesions
  • Barker - noun someone who stands in front of a show (as at a carnival) and gives a loud colorful sales talk to potential customersinformal terms for dogs
  • otic - adj. of or relating to near the ear
  • sinus - noun any of various air-filled cavities especially in the bones of the skull a wide channel containing blood; does not have the coating of an ordinary blood vessel an abnormal passage leading from a suppurating cavity to the body surface
  • Basal temperature - noun body temperature in the morning before rising or moving about or eating anything
  • Base pair - noun one of the pairs of chemical bases joined by hydrogen bonds that connect the complementary strands of a DNA molecule or of an RNA molecule that has two strands; the base pairs are adenine with thymine and guanine with cytosine in DNA and adenine with uracil and guanine with cytosine in RNA
  • Base - adj. debased; not genuine illegitimate having or showing an ignoble lack of honor or morality of low birth or station (`base' is archaic in this sense) not adhering to ethical or moral principles(used of metals) consisting of or alloyed with inferior metal serving as or forming a base noun a support or foundation place that runner must touch before scoring (electronics) the part of a transistor that separates the emitter from the collector installation from which a military force initiates operations a flat bottom on which something is intended to sit the principal ingredient of a mixture the place where you are stationed and from which missions start and end (anatomy) the part of an organ nearest its point of attachment the bottom or lowest part (numeration system) the positive integer that is equivalent to one in the next higher counting place the bottom side of a geometric figure from which the altitude can be constructed any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water lowest support of a structure the stock of basic facilities and capital equipment needed for the functioning of a country or area the fundamental assumptions from which something is begun or developed or calculated or explained (linguistics) the form of a word after all affixes are removed a lower limit a terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groups; has cells in more than 50 countries the most important or necessary part of something verb use as a basis for; found on assign to a station use (purified cocaine) by burning it and inhaling the fumes
  • pressor - adj. increasing (or tending to increase) blood pressurenoun any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure
  • Baseline - noun the lines a baseball player must follow while running the bases an imaginary line or standard by which things are measured or compared the back line bounding each end of a tennis or handball court; when serving the server must not step over this line
  • Basilar - adj. of or relating to or located at the base
  • Basophil - noun a leukocyte with basophilic granules easily stained by basic stains
  • Battle fatigue - noun a mental disorder caused by stress of active warfare
  • Bayes' theorem - noun (statistics) a theorem describing how the conditional probability of a set of possible causes for a given observed event can be computed from knowledge of the probability of each cause and the conditional probability of the outcome of each cause
  • Beard - noun hairy growth on or near the face of certain mammalsthe hair growing on the lower part of a man's face a person who diverts suspicion from someone (especially a woman who accompanies a male homosexual in order to conceal his homosexuality) a tuft or growth of hairs or bristles on certain plants such as iris or grasses tuft of strong filaments by which e.g. a mussel makes itself fast to a fixed surface verb go along the rim, like a beard around the chin
  • Beat - adj. very tired noun the act of beating to windward; sailing as close as possible to the direction from which the wind is blowing a stroke or blow a regular rate of repetition the sound of stroke or blow a regular route for a sentry or policeman a single pulsation of an oscillation produced by adding two waves of different frequencies; has a frequency equal to the difference between the two oscillations the basic rhythmic unit in a piece of music(prosody) the accent in a metrical foot of verse the rhythmic contraction and expansion of the arteries with each beat of the heart a member of the beat generation; a nonconformist in dress and behavior verb come out better in a competition, race, or conflict give a beating to; subject to a beating, either as a punishment or as an act of aggression hit repeatedly strike (water or bushes) repeatedly to rouse animals for hunting strike (a part of one's own body) repeatedly, as in great emotion or in accompaniment to music stir vigorously shape by beating produce a rhythm by striking repeatedly make by pounding or tramplingmove rhythmically indicate by beating, as with the fingers or drumsticks sail with much tacking or with difficulty move with a flapping motion move with a thrashing motion glare or strike with great intensity avoid paying be superior wear out completely be a mystery or bewildering to beat through cleverness and wit move with or as if with a regular alternating motion make a rhythmic sound make a sound like a clock or a timer
  • premature - adj. uncommonly early or before the expected timeborn after a gestation period of less than the normal time too soon or too hasty
  • Becker muscular dystrophy - noun a form of muscular dystrophy that sets in in adolescence or adulthood and progresses slowly but will affect all voluntary muscles; characterized by generalized weakness and muscle wasting that affects limb and trunk muscles first; similar to Duchenne's muscular dystrophy but less severe; inheritance is X-linked recessive (carried by females but affecting only males)
  • Bed bug - noun bug of temperate regions that infests especially beds and feeds on human blood
  • Bedsore - noun a chronic ulcer of the skin caused by prolonged pressure on it (as in bedridden patients)
  • Beetle - adj. jutting or overhanging noun insect having biting mouthparts and front wings modified to form horny covers overlying the membranous rear wings a tool resembling a hammer but with a large head (usually wooden); used to drive wedges or ram down paving stones or for crushing or beating or flattening or smoothingverb beat with a beetle fly or go in a manner resembling a beetlebe suspended over or hang over
  • blister - noun (pathology) an elevation of the skin filled with serous fluid verb get blistered cause blisters to from on subject to harsh criticism
  • moral - adj. concerned with principles of right and wrong or conforming to standards of behavior and character based on those principles psychological rather than physical or tangible in effectarising from the sense of right and wrong relating to principles of right and wrong; i.e. to morals or ethics adhering to ethical and moral principles noun the significance of a story or event
  • Behavior therapy - noun psychotherapy that seeks to extinguish or inhibit abnormal or maladaptive behavior by reinforcing desired behavior and extinguishing undesired behavior
  • Behavior - noun manner of acting or controlling yourself(psychology) the aggregate of the responses or reactions or movements made by an organism in any situation the action or reaction of something (as a machine or substance) under specified circumstances (behavioral attributes) the way a person behaves toward other people
  • automatic - adj. operating with minimal human intervention; independent of external control like the unthinking functioning of a machine without volition or conscious control noun a pistol that will keep firing until the ammunition is gone or the trigger is releasedlight machine gun
  • Belching - noun the forceful expulsion of something from inside a reflex that expels wind noisily from the stomach through the mouth
  • Bell - noun a hollow device made of metal that makes a ringing sound when struck the flared opening of a tubular device the sound of a bell being struck United States inventor (born in Scotland) of the telephone (1847-1922) English painter; sister of Virginia Woolf; prominent member of the Bloomsbury Group (1879-1961) a phonetician and father of Alexander Graham Bell (1819-1905) the shape of a bell (nautical) each of the eight half-hour units of nautical time signaled by strokes of a ship's bell; eight bells signals 4:00, 8:00, or 12:00 o'clock, either a.m. or p.m. a percussion instrument consisting of a set of tuned bells that are struck with a hammer; used as an orchestral instrument a push button at an outer door that gives a ringing or buzzing signal when pushed verb attach a bell to
  • Bell - noun a hollow device made of metal that makes a ringing sound when struck the flared opening of a tubular device the sound of a bell being struck United States inventor (born in Scotland) of the telephone (1847-1922) English painter; sister of Virginia Woolf; prominent member of the Bloomsbury Group (1879-1961) a phonetician and father of Alexander Graham Bell (1819-1905) the shape of a bell (nautical) each of the eight half-hour units of nautical time signaled by strokes of a ship's bell; eight bells signals 4:00, 8:00, or 12:00 o'clock, either a.m. or p.m. a percussion instrument consisting of a set of tuned bells that are struck with a hammer; used as an orchestral instrument a push button at an outer door that gives a ringing or buzzing signal when pushed verb attach a bell to
  • Charles - noun a river in eastern Massachusetts that empties into Boston Harbor and that separates Cambridge from Boston French physicist and author of Charles's law which anticipated Gay-Lussac's law (1746-1823) the eldest son of Elizabeth II and heir to the English throne (born in 1948) son of James I who was King of England and Scotland and Ireland; was deposed and executed by Oliver Cromwell (1600-1649) King of England and Scotland and Ireland during the Restoration (1630-1685) as Charles II he was Holy Roman Emperor and as Charles I he was king of France (823-877) King of France who began his reign with most of northern France under English control; after the intervention of Jeanne d'Arc the French were able to defeat the English and end the Hundred Years' War (1403-1461) King of France from 1560 to 1574 whose reign was dominated by his mother Catherine de Medicis (1550-1574) king of the Franks and Holy Roman Emperor; conqueror of the Lombards and Saxons (742-814)
  • Bell - noun a hollow device made of metal that makes a ringing sound when struck the flared opening of a tubular device the sound of a bell being struck United States inventor (born in Scotland) of the telephone (1847-1922) English painter; sister of Virginia Woolf; prominent member of the Bloomsbury Group (1879-1961) a phonetician and father of Alexander Graham Bell (1819-1905) the shape of a bell (nautical) each of the eight half-hour units of nautical time signaled by strokes of a ship's bell; eight bells signals 4:00, 8:00, or 12:00 o'clock, either a.m. or p.m. a percussion instrument consisting of a set of tuned bells that are struck with a hammer; used as an orchestral instrument a push button at an outer door that gives a ringing or buzzing signal when pushed verb attach a bell to
  • Belladonna - noun an alkaloidal extract or tincture of the poisonous belladonna plant that is used medicinally perennial Eurasian herb with reddish bell-shaped flowers and shining black berries; extensively grown in United States; roots and leaves yield atropine
  • Belly - noun the underpart of the body of certain vertebrates such as snakes or fish a protruding abdomen the hollow inside of something a part that bulges deeply the region of the body of a vertebrate between the thorax and the pelvis verb swell out or bulge out
  • Belt - noun a band to tie or buckle around the body (usually at the waist) endless loop of flexible material between two rotating shafts or pulleys an elongated region where a specific condition is foundthe act of hitting vigorously a vigorous blow a path or strip (as cut by one course of mowing) verb fasten with a belt deliver a blow tosing loudly and forcefully
  • seat - noun any support where you can sit (especially the part of a chair or bench etc. on which you sit) furniture that is designed for sitting on the cloth covering for the buttocks a space reserved for sitting (as in a theater or on a train or airplane) a center of authority (as a city from which authority is exercised) the fleshy part of the human body that you sit on verb show to a seat; assign a seat forprovide with seats put a seat on a chair be able to seat place ceremoniously or formally in an office or position
  • Benign - adj. pleasant and beneficial in nature or influencekindness of disposition or manner not dangerous to health; not recurrent or progressive (especially of a tumor)
  • Benjamin Spock - noun United States pediatrician whose many books on child care influenced the upbringing of children around the world (1903-1998)
  • Benzene - noun a colorless liquid hydrocarbon; highly inflammable; carcinogenic; the simplest of the aromatic compounds
  • a - noun the blood group whose red cells carry the A antigen the 1st letter of the Roman alphabet the basic unit of electric current adopted under the Systeme International d'Unites a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose) any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
  • pyrene - noun the small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar
  • Bereavement - noun state of sorrow over the death or departure of a loved one
  • Beriberi - noun avitaminosis caused by lack of thiamine (vitamin B1)
  • Beriberi - noun avitaminosis caused by lack of thiamine (vitamin B1)
  • infantile - adj. being or befitting or characteristic of an infant of or relating to infants or infancy indicating a lack of maturity
  • Bernard - noun French physiologist noted for research on secretions of the alimentary canal and the glycogenic function of the liver (1813-1878)
  • Berserk - adj. in a murderous frenzy as if possessed by a demonnoun one of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury
  • Beryllium - noun a light strong brittle grey toxic bivalent metallic element
  • Berzelius - noun Swedish chemist who discovered three new elements and determined the atomic weights of many others (1779-1848)
  • Berzelius - noun Swedish chemist who discovered three new elements and determined the atomic weights of many others (1779-1848)
  • Beta blocker - noun any of various drugs used in treating hypertension or arrhythmia; decreases force and rate of heart contractions by blocking beta-adrenergic receptors of the autonomic nervous system
  • Beta-carotene - noun an isomer of carotene that is found in dark green and dark yellow fruits and vegetables
  • Beta cell - noun a cell that produces insulin in the isles of Langerhans in the pancreas
  • Beta cell - noun a cell that produces insulin in the isles of Langerhans in the pancreas
  • Beta particle - noun a high-speed electron or positron emitted in the decay of a radioactive isotope
  • Betel nut - noun seed of betel palm; chewed with leaves of the betel pepper and lime as a digestive stimulant and narcotic in southeastern Asia
  • Bi - noun a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals
  • Bias - adj. slanting diagonally across the grain of a fabric noun a partiality that prevents objective consideration of an issue or situation a line or cut across a fabric that is not at right angles to a side of the fabric verb cause to be biased influence in an unfair way
  • Bicarbonate - noun a salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced; an acid carbonate
  • Biceps - noun any skeletal muscle having two origins (but especially the muscle that flexes the forearm)
  • Bicornuate - adj. having two horns or horn-shaped parts
  • Bicuspid - adj. having two cusps or points (especially a molar tooth) noun a tooth having two cusps or points; located between the incisors and the molars
  • Bicuspid valve - noun valve with two cusps; situated between the left atrium and the left ventricle
  • bid - noun an attempt to get something (bridge) the number of tricks a bridge player is willing to contract to make a formal proposal to buy at a specified price an authoritative direction or instruction to do something verb ask for or request earnestly make a serious effort to attain something make a demand, as for a card or a suit or a show of hands ask someone in a friendly way to do somethinginvoke upon propose a payment
  • Bifid - adj. divided into two lobes
  • Bilateral - adj. having two sides or parts affecting or undertaken by two parties having identical parts on each side of an axis
  • Bile - noun a digestive juice secreted by the liver and stored in the gallbladder; aids in the digestion of fats
  • Bile acid - noun any of the steroid acids generated in the liver and stored with bile
  • Bilharzia - noun an infestation with or a resulting infection caused by a parasite of the genus Schistosoma; common in the tropics and Far East; symptoms depend on the part of the body infected
  • Bilharziasis - noun an infestation with or a resulting infection caused by a parasite of the genus Schistosoma; common in the tropics and Far East; symptoms depend on the part of the body infected
  • Biliary - adj. relating to the bile ducts or the gallbladder relating to or containing bile
  • Bilious - adj. suffering from or suggesting a liver disorder or gastric distress relating to or containing bile irritable as if suffering from indigestion
  • Biliousness - noun gastric distress caused by a disorder of the liver or gall bladder a disposition to exhibit uncontrolled anger
  • Bilirubin - noun an orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice
  • Binaural - adj. relating to or having or hearing with two ears
  • Biochemical - adj. of or relating to biochemistry; involving chemical processes in living organisms
  • Biochemistry - noun the organic chemistry of compounds and processes occuring in organisms; the effort to understand biology within the context of chemistry
  • Biofeedback - noun a training program in which a person is given information about physiological processes (heart rate or blood pressure) that is not normally available with the goal of gaining conscious control of them
  • Biology - noun the science that studies living organismscharacteristic life processes and phenomena of living organisms all the plant and animal life of a particular region
  • molecular - adj. relating to simple or elementary organizationrelating to or produced by or consisting of molecules
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • bone marrow - noun the fatty network of connective tissue that fills the cavities of bones very tender and very nutritious tissue from marrowbones
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • brain - noun that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord mental ability the brain of certain animals used as meat that which is responsible for one's thoughts and feelings; the seat of the faculty of reason someone who has exceptional intellectual ability and originality verb kill by smashing someone's skull hit on the head
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • breast - noun the front part of the trunk from the neck to the abdomen either of two soft fleshy milk-secreting glandular organs on the chest of a woman meat carved from the breast of a fowlverb reach the summit meet at breast level confront bodily
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • liver - adj. having a reddish-brown color noun large and complicated reddish-brown glandular organ located in the upper right portion of the abdominal cavity; secretes bile and functions in metabolism of protein and carbohydrate and fat; synthesizes substances involved in the clotting of the blood; synthesizes vitamin A; detoxifies poisonous substances and breaks down worn-out erythrocytes liver of an animal used as meat someone who lives in a place a person who has a special life style
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • muscle - noun authority or power or force (especially when used in a coercive way) animal tissue consisting predominantly of contractile cells one of the contractile organs of the bodypossessing muscular strength a bully employed as a thug or bodyguard verb make one's way by force
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • punch - noun (boxing) a blow with the fist a tool for making holes or indentations an iced mixed drink usually containing alcohol and prepared for multiple servings; normally served in a punch bowlverb deliver a quick blow to make a hole into or between, as for ease of separation drive forcibly as if by a punch
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • skin - noun an outer surface (usually thin) a bag serving as a container for liquids; it is made from the hide of an animal a natural protective body covering and site of the sense of touch a person's skin regarded as their life the tissue forming the hard outer layer (of e.g. a fruit) body covering of a living animal the rind of a fruit or vegetable verb strip the skin off bruise, cut, or injure the skin or the surface of remove the bark of a tree climb awkwardly, as if by scrambling
  • Biopsy - noun examination of tissues or liquids from the living body to determine the existence or cause of a disease
  • Biosafety - noun safety from exposure to infectious agents
  • Biosafety level - noun the level of safety from exposure to infectious agents; depends on work practices and safety equipment and facilities
  • Biotechnology - noun the branch of engineering science in which biological science is used to study the relation between workers and their environments the branch of molecular biology that studies the use of microorganisms to perform specific industrial processes
  • Bioterrorism - noun terrorism using the weapons of biological warfare
  • Biotin - noun a B vitamin that aids in body growth
  • Bipolar disorder - noun a mental disorder characterized by episodes of mania and depression
  • emergency - noun a sudden unforeseen crisis (usually involving danger) that requires immediate action a state in which martial law applies a brake operated by hand; usually operates by mechanical linkage
  • Birth rate - noun the ratio of live births in an area to the population of that area; expressed per 1000 population per year
  • Birthmark - noun a blemish on the skin that is formed before birth
  • Bisexual - adj. sexually attracted to both sexes having an ambiguous sexual identity noun a person who is sexually attracted to both sexes
  • Black Death - noun the epidemic form of bubonic plague experienced during the Middle Ages when it killed nearly half the people of western Europe
  • Black eye - noun a bad reputation an unfortunate happening that hinders or impedes; something that is thwarting or frustrating a swollen bruise caused by a blow to the eye
  • Black plague - noun the epidemic form of bubonic plague experienced during the Middle Ages when it killed nearly half the people of western Europe
  • Blackhead - noun a black-tipped plug clogging a pore of the skin
  • Elizabeth - noun Queen of England from 1558 to 1603; daughter of Henry VIII and Anne Boleyn; she succeeded Mary I (who was a Catholic) and restored Protestantism to England; during her reign Mary Queen of Scots was executed and the Spanish Armada was defeated; her reign was marked by prosperity and literary genius (1533-1603) daughter of George VI who became the Queen of England and Northern Ireland in 1952 on the death of her father (1926-)
  • Bladder - noun a bag that fills with air a distensible membranous sac (usually containing liquid or gas)
  • indwelling - adj. existing or residing as an inner activating spirit or force or principle
  • BOO - noun a cry or noise made to express displeasure or contempt verb show displeasure, as after a performance or speech
  • Bladder - noun a bag that fills with air a distensible membranous sac (usually containing liquid or gas)
  • BLAST - noun a very long fly ball an explosion (as of dynamite)intense adverse criticism a highly pleasurable or exciting experience a sudden very loud noise a strong current of air verbuse explosives on make a strident sound hit hard
  • Blastoma - noun a tumor composed of immature undifferentiated cells
  • Blastomycosis - noun any of several infections of the skin or mucous membrane caused by Blastomyces
  • Bleb - noun (pathology) an elevation of the skin filled with serous fluid
  • Blepharitis - noun inflammation of the eyelids characterized by redness and swelling and dried crusts
  • Blepharospasm - noun spasm of the eyelid muscle resulting in closure of the eye
  • Blind - adj. unable or unwilling to perceive or understand not based on reason or evidence unable to see noun something that keeps things out or hinders sight a hiding place sometimes used by hunters (especially duck hunters) people who have severe visual impairments, considered as a group something intended to misrepresent the true nature of an activity verb make dim by comparison or conceal make blind by putting the eyes out render unable to see
  • Blind spot - noun the point where the optic nerve enters the retina; not sensitive to light a subject about which you are ignorant or prejudiced and fail to exercise good judgment
  • Blindness - noun the state of being blind or lacking sight
  • Blindness - noun the state of being blind or lacking sight
  • legal - adj. allowed by official rules established by or founded upon law or official or accepted rules having legal efficacy or force of or relating to jurisprudence relating to or characteristic of the profession of law
  • Blindness - noun the state of being blind or lacking sight
  • night - noun darkness the dark part of the diurnal cycle considered a time unit the time after sunset and before sunrise while it is dark outside the time between sunset and midnight the period spent sleeping a period of ignorance or backwardness or gloom a shortening of nightfall Roman goddess of night; daughter of Erebus; counterpart of Greek Nyx
  • Blister - noun (pathology) an elevation of the skin filled with serous fluid verb get blistered cause blisters to from on subject to harsh criticism
  • Blister beetle - noun beetle that produces a secretion that blisters the skin
  • Blister - noun (pathology) an elevation of the skin filled with serous fluid verb get blistered cause blisters to from on subject to harsh criticism
  • blood - noun temperament or disposition the fluid (red in vertebrates) that is pumped by the heart people viewed as members of a group the descendants of one individual a dissolute man in fashionable society verb smear with blood, as in a hunting initiation rite, where the face of a person is smeared with the blood of the kill
  • Blister - noun (pathology) an elevation of the skin filled with serous fluid verb get blistered cause blisters to from on subject to harsh criticism
  • fever - noun intense nervous anticipation a rise in the temperature of the body; frequently a symptom of infection
  • Blister - noun (pathology) an elevation of the skin filled with serous fluid verb get blistered cause blisters to from on subject to harsh criticism
  • water - noun a fluid necessary for the life of most animals and plants binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent once thought to be one of four elements composing the universe (Empedocles) a facility that provides a source of water the part of the earth's surface covered with water (such as a river or lake or ocean) liquid excretory product verb secrete or form water, as tears or saliva supply with water, as with channels or ditches or streams fill with tears provide with water
  • Blistering agent - noun a toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs; there is no known antidote
  • Block - noun a solid piece of something (usually having flat rectangular sides) housing in a large building that is divided into separate units an inability to remember or think of something you normally can do; often caused by emotional tension a number or quantity of related things dealt with as a unit a rectangular area in a city surrounded by streets and usually containing several buildings(computer science) a sector or group of sectors that function as the smallest data unit permitted a three-dimensional shape with six square or rectangular sides the act of obstructing or deflecting someone's movements a platform from which an auctioneer sellsan obstruction in a pipe or tube a metal casting containing the cylinders and cooling ducts of an engine a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope verb shape into a block or blocks shape by using a blocksupport, secure, or raise with a block stamp or emboss a title or design on a book with a block interrupt the normal function of by means of anesthesia run on a block system prohibit the conversion or use of (assets) be unable to remember interfere with or prevent the reception of signals impede the movement of (an opponent or a ball) block passage through render unsuitable for passageobstruct shut out from view or get in the way so as to hide from sight hinder or prevent the progress or accomplishment of stop from happening or developing
  • caudal - adj. situated in or directed toward the part of the body from which the tail arises resembling a tail constituting or relating to a tail adv. toward the posterior end of the body
  • Blocker - noun a class of drugs that inhibit (block) some biological process a football player whose responsibility is to block players attempting to stop an offensive play
  • beta - adj. preliminary or testing stage of a software or hardware product second in order of importance noun the 2nd letter of the Greek alphabet beets
  • Blood - noun temperament or disposition the fluid (red in vertebrates) that is pumped by the heart people viewed as members of a group the descendants of one individual a dissolute man in fashionable society verb smear with blood, as in a hunting initiation rite, where the face of a person is smeared with the blood of the kill
  • Blood bank - noun a place for storing whole blood or blood plasma
  • Blood blister - noun blister containing blood or bloody serum usually caused by an injury
  • Blood clot - noun a semisolid mass of coagulated red and white blood cells
  • Blood count - noun the act of estimating the number of red and white corpuscles in a blood sample the number of red and white corpuscles in a blood sample
  • Blood group - noun human blood cells (usually just the red blood cells) that have the same antigens
  • Blood group - noun human blood cells (usually just the red blood cells) that have the same antigens
  • ABO - noun a dark-skinned member of a race of people living in Australia when Europeans arrived
  • Lung - noun either of two saclike respiratory organs in the chest of vertebrates; serves to remove carbon dioxide and provide oxygen to the blood
  • Blood poisoning - noun invasion of the bloodstream by virulent microorganisms from a focus of infection
  • Blood pressure - noun the pressure of the circulating blood against the walls of the blood vessels; results from the systole of the left ventricle of the heart; sometimes measured for a quick evaluation of a person's health
  • Blood pressure - noun the pressure of the circulating blood against the walls of the blood vessels; results from the systole of the left ventricle of the heart; sometimes measured for a quick evaluation of a person's health
  • high - adj. happy and excited and energetic slightly and pleasantly intoxicated from alcohol or a drug (especially marijuana) (literal meaning) being at or having a relatively great or specific elevation or upward extension (sometimes used in combinations like `knee-high') greater than normal in degree or intensity or amount used of sounds and voices; high in pitch or frequency (used of the smell of meat) smelling spoiled or tainted standing above others in quality or position adv. at a great altitude far up toward the source in or to a high position, amount, or degree in a rich manner noun a lofty level or position or degree a high place a state of altered consciousness induced by alcohol or narcotics a state of sustained elation an air mass of higher than normal pressure a forward gear with a gear ratio that gives the greatest vehicle velocity for a given engine speed a public secondary school usually including grades 9 through 12
  • Blood pressure - noun the pressure of the circulating blood against the walls of the blood vessels; results from the systole of the left ventricle of the heart; sometimes measured for a quick evaluation of a person's health
  • low - adj. literal meanings; being at or having a relatively small elevation or upward extension less than normal in degree or intensity or amount used of sounds and voices; low in pitch or frequency very low in volume unrefined in character being the gear producing the lowest drive speed low in spirits of the most contemptible kind subdued or brought low in condition or status no longer sufficient low or inferior in station or quality adv. in a low position; near the ground noun a low level or position or degreeBritish political cartoonist (born in New Zealand) who created the character Colonel Blimp (1891-1963) an air mass of lower pressure; often brings precipitation the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving verb make a low noise, characteristic of bovines
  • high - adj. happy and excited and energetic slightly and pleasantly intoxicated from alcohol or a drug (especially marijuana) (literal meaning) being at or having a relatively great or specific elevation or upward extension (sometimes used in combinations like `knee-high') greater than normal in degree or intensity or amount used of sounds and voices; high in pitch or frequency (used of the smell of meat) smelling spoiled or tainted standing above others in quality or position adv. at a great altitude far up toward the source in or to a high position, amount, or degree in a rich manner noun a lofty level or position or degree a high place a state of altered consciousness induced by alcohol or narcotics a state of sustained elation an air mass of higher than normal pressure a forward gear with a gear ratio that gives the greatest vehicle velocity for a given engine speed a public secondary school usually including grades 9 through 12
  • low - adj. literal meanings; being at or having a relatively small elevation or upward extension less than normal in degree or intensity or amount used of sounds and voices; low in pitch or frequency very low in volume unrefined in character being the gear producing the lowest drive speed low in spirits of the most contemptible kind subdued or brought low in condition or status no longer sufficient low or inferior in station or quality adv. in a low position; near the ground noun a low level or position or degreeBritish political cartoonist (born in New Zealand) who created the character Colonel Blimp (1891-1963) an air mass of lower pressure; often brings precipitation the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving verb make a low noise, characteristic of bovines
  • Blood transfusion - noun the introduction of blood or blood plasma into a vein or artery
  • Blood - noun temperament or disposition the fluid (red in vertebrates) that is pumped by the heart people viewed as members of a group the descendants of one individual a dissolute man in fashionable society verb smear with blood, as in a hunting initiation rite, where the face of a person is smeared with the blood of the kill
  • urinary - adj. of or relating to the function or production or secretion of urine of or relating to the urinary system of the body
  • Blot - noun an act that brings discredit to the person who does it a blemish made by dirt verb dry (ink) with blotting paper make a spot or mark onto
  • Northern - adj. situated in or coming from regions of the north in or characteristic of a region of the United States north of (approximately) the Mason-Dixon line coming from the north; used especially of wind situated in or oriented toward the north noun a dialect of Middle English that developed into Scottish Lallans
  • Blot - noun an act that brings discredit to the person who does it a blemish made by dirt verb dry (ink) with blotting paper make a spot or mark onto
  • Southern - adj. situated in or coming from regions of the south in or characteristic of a region of the United States south of (approximately) the Mason-Dixon line from the south; used especially of wind situated in or oriented toward the south
  • Blot - noun an act that brings discredit to the person who does it a blemish made by dirt verb dry (ink) with blotting paper make a spot or mark onto
  • Western - adj. lying toward or situated in the west relating to or characteristic of regions of western parts of the world of or characteristic of regions of the United States west of the Mississippi River of wind; from the west lying in or toward the west noun a film about life in the western United States during the period of exploration and development a sandwich made from a western omelet
  • Blue baby - noun an infant born with a bluish color; usually has a defective heart
  • Blue cohosh - noun tall herb of eastern North America and Asia having blue berrylike fruit and a thick knotty rootstock formerly used medicinally
  • Blueberry root - noun tall herb of eastern North America and Asia having blue berrylike fruit and a thick knotty rootstock formerly used medicinally
  • Blush - noun sudden reddening of the face (as from embarrassment or guilt or shame or modesty) a rosy color (especially in the cheeks) taken as a sign of good health verb turn red, as if in embarrassment or shame become rosy or reddish
  • BM - noun a euphemism for defecation solid excretory product evacuated from the bowels
  • Body odor - noun malodorousness resulting from a failure to bathe
  • Body - noun the external structure of a vehicle the entire structure of an organism (especially an animal or human being) a natural object consisting of a dead animal or person the central message of a communication a group of persons associated by some common tie or occupation and regarded as an entity a collection of particulars considered as a system an individual 3-dimensional object that has mass and that is distinguishable from other objectsthe property of holding together and retaining its shape the body excluding the head and neck and limbs verb invest with or as with a body; give body to
  • amygdaloid - adj. shaped like an almond noun volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits
  • Body - noun the external structure of a vehicle the entire structure of an organism (especially an animal or human being) a natural object consisting of a dead animal or person the central message of a communication a group of persons associated by some common tie or occupation and regarded as an entity a collection of particulars considered as a system an individual 3-dimensional object that has mass and that is distinguishable from other objectsthe property of holding together and retaining its shape the body excluding the head and neck and limbs verb invest with or as with a body; give body to
  • ciliary - adj. of or relating to the human eyelash of or relating to cilia projecting from the surface of a cell relating to the ciliary body and associated structures of the eye
  • Bodywork - noun the work of making or repairing vehicle bodiesthe exterior body of a motor vehicle
  • Boil - noun a painful sore with a hard core filled with pus the temperature at which a liquid boils at sea level verb cook in boiling liquid bring to, or maintain at, the boiling point come to the boiling point and change from a liquid to vapor be in an agitated emotional state be agitated
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • aneurysmal - adj. relating to or affected by an aneurysm
  • simple - adj. unornamented (botany) of leaf shapes; of leaves having no divisions or subdivisions having few parts; not complex or complicated or involved easy and not involved or complicated apart from anything else; without additions or modifications lacking mental capacity and devoid of subtlety exhibiting childlike simplicity and credulity noun any herbaceous plant having medicinal properties a person lacking intelligence or common sense
  • Bone marrow - noun the fatty network of connective tissue that fills the cavities of bones very tender and very nutritious tissue from marrowbones
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • ankle - noun a gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • blade - noun the flat part of a tool or weapon that (usually) has a cutting edge flat surface that rotates and pushes against air or water the part of the skate that slides on the ice a broad flat body part (as of the shoulder or tongue) a cut of beef from the shoulder blade something long and thin resembling a blade of grass a dashing young man especially a leaf of grass or the broad portion of a leaf as distinct from the petiole a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • breast - noun the front part of the trunk from the neck to the abdomen either of two soft fleshy milk-secreting glandular organs on the chest of a woman meat carved from the breast of a fowlverb reach the summit meet at breast level confront bodily
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • calf - noun young of domestic cattle young of various large placental mammals e.g. whale or giraffe or elephant or buffalo the muscular back part of the shank fine leather from the skin of a calf
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • carpal - adj. of or relating to the wrist noun any of the eight small bones of the wrist of primates
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • coccygeal - adj. of or relating to or near the coccyx
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • collar - noun a figurative restraint a band that fits around the neck and is usually folded over a band of leather or rope that is placed around an animal's neck as a harness or to identify it the stitching that forms the rim of a shoe or boot the act of apprehending (especially apprehending a criminal) necklace that fits tightly around a woman's neck verb take into custody furnish with a collar seize by the neck or collar
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • cranial - adj. of or relating to the cranium which encloses the brain
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • cuboid - adj. shaped like a cube noun a rectangular parallelepiped
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • ethmoid - noun one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • frontal - adj. belonging to the front part of or adjacent to the forehead or frontal bone meeting front to front of or relating to the front of an advancing mass of air noun a drapery that covers the front of an altar the face or front of a building an adornment worn on the forehead
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • heel - noun the bottom of a shoe or boot; the back part of a shoe or boot that touches the ground and provides elevation (golf) the part of the clubhead where it joins the shaft the lower end of a ship's mast the back part of the human foot one of the crusty ends of a loaf of bread someone who is morally reprehensible verb put a new heel on strike with the heel of the club perform with the heelsfollow at the heels of a person tilt to one side
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • occipital - adj. of or relating to the occiput
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • parietal - adj. of or relating to or associated with the parietal bones in the cranium
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • sesamoid - noun any of several small round bones formed in a tendon where it passes over a joint
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • shin - noun the front part of the human leg between the knee and the ankle the 22nd letter of the Hebrew alphabet a cut of meat from the lower part of the leg the inner and thicker of the two bones of the human leg between the knee and ankle verb climb awkwardly, as if by scrambling
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • sphenoid - noun butterfly-shaped bone at the base of the skull
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • temporal - adj. of this earth or world not eternal concerned with secular rather than sacred matters of the material world of or relating to the temples (the sides of the skull behind the orbit) of or relating to or limited by time noun the semantic role of the noun phrase that designating the time of the state or action denoted by the verb
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • thigh - noun the part of the leg between the hip and the knee the upper joint of the leg of a fowl
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • wing - noun a movable organ for flying (one of a pair) one of the horizontal airfoils on either side of the fuselage of an airplane a stage area out of sight of the audience the wing of a fowl a unit of military aircraft a hockey player stationed in a forward position on either side an addition that extends a main building a barrier that surrounds the wheels of a vehicle to block splashing water or mudthe side of military or naval formation verb travel through the air; be airborne
  • Bone - adj. consisting of or made up of bone noun a shade of white the color of bleached bones rigid connective tissue that makes up the skeleton of vertebrates the porous calcified substance from which bones are made verb remove the bones from study intensively, as before an exam
  • zygomatic - adj. of or relating to the cheek region of the face nounthe arch of bone beneath the eye that forms the prominence of the cheek
  • Bones - noun a percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance
  • axial - adj. situated on or along or in the direction of an axis of or relating to or resembling an axis of rotation relating to or attached to the axis
  • Booster shot - noun an additional dose that makes sure the first dose was effective
  • Borage - noun leaves flavor sauces and punches; young leaves eaten in salads or cooked hairy blue-flowered European annual herb long used in herbal medicine and eaten raw as salad greens or cooked like spinach
  • Bornholm disease - noun an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)
  • Borrelia - noun cause of e.g. European and African relapsing fever
  • Botox - noun a neurotoxin (trade name Botox) that is used clinically in small quantities to treat strabismus and facial spasms and other neurological disorders characterized by abnormal muscle contractions; is also used by cosmetic surgeons to smooth frown lines temporarily
  • Botulinum toxin - noun any of several neurotoxins that are produced by the anaerobic bacterium Clostridium botulinum; causes muscle paralysis
  • Botulism - noun food poisoning from ingesting botulin; not infectious; affects the CNS; can be fatal if not treated promptly
  • Bovine - adj. dull and slow-moving and stolid; like an ox of or relating to or belonging to the genus Bos (cattle) noun any of various members of the genus Bos
  • Bow legs - noun outward curvature of the legs
  • Bowel - noun the part of the alimentary canal between the stomach and the anus
  • inflammatory - adj. characterized or caused by inflammationarousing to action or rebellion
  • BPH - noun enlarged prostate; appears to be part of the natural aging process
  • Brace - noun a structural member used to stiffen a framework a carpenter's tool having a crank handle for turning and a socket to hold a bit for boring an appliance that corrects dental irregularitiesa support that steadies or strengthens something else elastic straps that hold trousers up (usually used in the plural) a rope on a square-rigged ship that is used to swing a yard about and secure it either of two punctuation marks ({ or }) used to enclose textual material a set of two similar things considered as a unit two items of the same kind verb support by bracing support or hold steady and make steadfast, with or as if with a brace prepare (oneself) for something unpleasant or difficult cause to be alert and energetic
  • Brace - noun a structural member used to stiffen a framework a carpenter's tool having a crank handle for turning and a socket to hold a bit for boring an appliance that corrects dental irregularitiesa support that steadies or strengthens something else elastic straps that hold trousers up (usually used in the plural) a rope on a square-rigged ship that is used to swing a yard about and secure it either of two punctuation marks ({ or }) used to enclose textual material a set of two similar things considered as a unit two items of the same kind verb support by bracing support or hold steady and make steadfast, with or as if with a brace prepare (oneself) for something unpleasant or difficult cause to be alert and energetic
  • Milwaukee - noun largest city of Wisconsin; located in southeastern Wisconsin on the western shore of Lake Michigan; a flourishing agricultural center known for its breweries
  • Brachial artery - noun the main artery of the upper arm; a continuation of the axillary artery; bifurcates into the radial and ulnar arteries at the elbow
  • Brachial plexus - noun a network of nerves formed by cervical and thoracic spinal nerves and supplying the arm and parts of the shoulder
  • Brachial vein - noun two veins in either arm that accompany the brachial artery and empty into the axillary vein
  • coronary artery - noun the artery that branches from the aorta to supply blood to the heart
  • Brain - noun that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord mental ability the brain of certain animals used as meat that which is responsible for one's thoughts and feelings; the seat of the faculty of reason someone who has exceptional intellectual ability and originality verb kill by smashing someone's skull hit on the head
  • Brain-stem - noun the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus
  • Brain - noun that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord mental ability the brain of certain animals used as meat that which is responsible for one's thoughts and feelings; the seat of the faculty of reason someone who has exceptional intellectual ability and originality verb kill by smashing someone's skull hit on the head
  • Brain - noun that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord mental ability the brain of certain animals used as meat that which is responsible for one's thoughts and feelings; the seat of the faculty of reason someone who has exceptional intellectual ability and originality verb kill by smashing someone's skull hit on the head
  • Brainstem - noun the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus
  • Branched chain ketoaciduria - noun an inherited disorder of metabolism in which the urine has a odor characteristic of maple syrup; if untreated it can lead to mental retardation and death in early childhood
  • Breadbasket - noun a basket for serving bread a geographic region serving as the principal source of grain an enlarged and muscular saclike organ of the alimentary canal; the principal organ of digestion
  • Breakbone fever - noun an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints
  • Breast - noun the front part of the trunk from the neck to the abdomen either of two soft fleshy milk-secreting glandular organs on the chest of a woman meat carved from the breast of a fowlverb reach the summit meet at breast level confront bodily
  • Breast cancer - noun cancer of the breast; one of the most common malignancies in women in the US
  • Breast cancer - noun cancer of the breast; one of the most common malignancies in women in the US
  • familial - adj. tending to occur among members of a family usually by heredity relating to or having the characteristics of a family
  • Breast cancer - noun cancer of the breast; one of the most common malignancies in women in the US
  • male - adj. being the sex (of plant or animal) that produces gametes (spermatozoa) that perform the fertilizing function in generation for or pertaining to or composed of men or boys characteristic of a man noun an animal that produces gametes (spermatozoa) that can fertilize female gametes (ova) the capital of Maldives in the center of the islands a person who belongs to the sex that cannot have babies
  • early - adj. at or near the beginning of a period of time or course of events or before the usual or expected time being or occurring at an early stage of development of an early stage in the development of a language or literature very young belonging to the distant pastexpected in the near future adv. before the usual time or the time expected in good time during an early stage
  • Breast - noun the front part of the trunk from the neck to the abdomen either of two soft fleshy milk-secreting glandular organs on the chest of a woman meat carved from the breast of a fowlverb reach the summit meet at breast level confront bodily
  • amastia - noun absence of the mammary glands (either through surgery or developmental defect)
  • Breast - noun the front part of the trunk from the neck to the abdomen either of two soft fleshy milk-secreting glandular organs on the chest of a woman meat carved from the breast of a fowlverb reach the summit meet at breast level confront bodily
  • Breast - noun the front part of the trunk from the neck to the abdomen either of two soft fleshy milk-secreting glandular organs on the chest of a woman meat carved from the breast of a fowlverb reach the summit meet at breast level confront bodily
  • Breast - noun the front part of the trunk from the neck to the abdomen either of two soft fleshy milk-secreting glandular organs on the chest of a woman meat carved from the breast of a fowlverb reach the summit meet at breast level confront bodily
  • Breathing - adj. passing or able to pass air in and out of the lungs normally; sometimes used in combination noun the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
  • Breech - noun opening in the rear of the barrel of a gun where bullets can be loaded
  • Breech birth - noun delivery of an infant whose feet or buttocks appear first
  • Bridge - noun any of various card games based on whist for four players a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc. an upper deck where a ship is steered and the captain stands the link between two lenses; rests on nose a denture anchored to teeth on either side of missing teeth a wooden support that holds the strings up a circuit consisting of two branches (4 arms arranged in a diamond configuration) across which a meter is connected the hard ridge that forms the upper part of the nose something resembling a bridge in form or function verb make a bridge across cross over on a bridgeconnect or reduce the distance between
  • Broca's area - noun the motor speech center in the left hemisphere of the brain in most people
  • Bromine - noun a nonmetallic largely pentavalent heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water
  • Bronchiole - noun any of the smallest bronchial ducts; ending in alveoli
  • Bronchiolitis - noun inflammation of the membranes lining the bronchioles
  • Bronchitis - noun inflammation of the membranes lining the bronchial tubes
  • Bronchitis - noun inflammation of the membranes lining the bronchial tubes
  • chronic - adj. being long-lasting and recurrent or characterized by long suffering
  • Bronchoscope - noun a slender tubular instrument used to examine the bronchial tubes
  • Bronchospasm - noun a spasm of the bronchi that makes exhalation difficult and noisy; associated with asthma and bronchitis
  • Bronchus - noun either of the two main branches of the trachea
  • Brown - adj. (of skin) deeply suntanned of a color similar to that of wood or earth noun an orange of low brightness and saturationabolitionist who was hanged after leading an unsuccessful raid at Harper's Ferry, Virginia (1800-1858) Scottish botanist who first observed the movement of small particles in fluids now known a Brownian motion (1773-1858) a university in Rhode Island verb fry in a pan until it changes color
  • Brown - adj. (of skin) deeply suntanned of a color similar to that of wood or earth noun an orange of low brightness and saturationabolitionist who was hanged after leading an unsuccessful raid at Harper's Ferry, Virginia (1800-1858) Scottish botanist who first observed the movement of small particles in fluids now known a Brownian motion (1773-1858) a university in Rhode Island verb fry in a pan until it changes color
  • Brucellosis - noun infectious bacterial disease of human beings transmitted by contact with infected animals or infected meat or milk products; characterized by fever and headache an infectious disease of domestic animals often resulting in spontaneous abortion; transmittable to human beings
  • Bruise - noun an injury that doesn't break the skin but results in some discoloration verb damage (plant tissue) by abrasion of pressure break up into small pieces for food preparation injure the underlying soft tissue of bone of hurt the feelings of
  • Bruit - verb tell or spread rumors
  • Bruxism - noun involuntarily or unconsciously clenching or grinding the teeth, typically during sleep
  • Bubo - noun a genus of Strigidae a lymph node that is inflamed and swollen because of plague or gonorrhea or tuberculosis
  • Bubonic plague - noun the most common form of the plague in humans; characterized by chills, prostration, delirium and the formation of buboes in the armpits and groin; does not spread from person to person
  • Bug - noun general term for any insect or similar creeping or crawling invertebrate a small hidden microphone; for listening secretly a fault or defect in a system or machine a minute life form (especially a disease-causing bacterium); the term is not in technical use insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis verbannoy persistently tap a telephone or telegraph wire to get information
  • kissing - noun affectionate play (or foreplay without contact with the genital organs)
  • Bug - noun general term for any insect or similar creeping or crawling invertebrate a small hidden microphone; for listening secretly a fault or defect in a system or machine a minute life form (especially a disease-causing bacterium); the term is not in technical use insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis verbannoy persistently tap a telephone or telegraph wire to get information
  • reduviid - noun a true bug: long-legged predacious bug living mostly on other insects; a few suck blood of mammals
  • Bulbar - adj. involving the medulla oblongata
  • Bulbar conjunctiva - noun the part of the conjunctiva covering the anterior face of the sclera and the surface epithelium of the cornea
  • Bulbourethral gland - noun either of two glands that discharge a component of seminal fluid into the urethra; homologous to Bartholin's gland in the female
  • Bulimia - noun pathologically insatiable hunger (especially when caused by brain lesions) a disorder of eating seen among young women who go on eating binges and then feel guilt and depression and self-condemnation
  • Bulla - noun the round leaden seal affixed to a papal bull(pathology) an elevation of the skin filled with serous fluid
  • Bullying - adj. noisily domineering; tending to browbeat othersnoun the act of intimidating a weaker person to make them do something
  • BUN - noun small rounded bread either plain or sweet
  • Bundling - noun the act of shoving hastily the act of binding something into a bundle a onetime custom during courtship of unmarried couples occupying the same bed without undressing
  • Bunion - noun a painful swelling of the bursa of the first joint of the big toe
  • Burn - noun damage inflicted by fire a place or area that has been burned (especially on a person's body) an injury caused by exposure to heat or chemicals or radiation pain that feels hot as if it were on fire a browning of the skin resulting from exposure to the rays of the sun verb burn with heat, fire, or radiation undergo combustion cause to undergo combustion destroy by fire feel strong emotion, especially anger or passion feel hot or painfulspend (significant amounts of money) burn at the stake cause to burn or combust shine intensely, as if with heat get a sunburn by overexposure to the sun burn, sear, or freeze (tissue) using a hot iron or electric current or a caustic agent use up (energy) create by duplicating data cause a sharp or stinging pain or discomfort
  • Burn - noun damage inflicted by fire a place or area that has been burned (especially on a person's body) an injury caused by exposure to heat or chemicals or radiation pain that feels hot as if it were on fire a browning of the skin resulting from exposure to the rays of the sun verb burn with heat, fire, or radiation undergo combustion cause to undergo combustion destroy by fire feel strong emotion, especially anger or passion feel hot or painfulspend (significant amounts of money) burn at the stake cause to burn or combust shine intensely, as if with heat get a sunburn by overexposure to the sun burn, sear, or freeze (tissue) using a hot iron or electric current or a caustic agent use up (energy) create by duplicating data cause a sharp or stinging pain or discomfort
  • Burn - noun damage inflicted by fire a place or area that has been burned (especially on a person's body) an injury caused by exposure to heat or chemicals or radiation pain that feels hot as if it were on fire a browning of the skin resulting from exposure to the rays of the sun verb burn with heat, fire, or radiation undergo combustion cause to undergo combustion destroy by fire feel strong emotion, especially anger or passion feel hot or painfulspend (significant amounts of money) burn at the stake cause to burn or combust shine intensely, as if with heat get a sunburn by overexposure to the sun burn, sear, or freeze (tissue) using a hot iron or electric current or a caustic agent use up (energy) create by duplicating data cause a sharp or stinging pain or discomfort
  • Burn - noun damage inflicted by fire a place or area that has been burned (especially on a person's body) an injury caused by exposure to heat or chemicals or radiation pain that feels hot as if it were on fire a browning of the skin resulting from exposure to the rays of the sun verb burn with heat, fire, or radiation undergo combustion cause to undergo combustion destroy by fire feel strong emotion, especially anger or passion feel hot or painfulspend (significant amounts of money) burn at the stake cause to burn or combust shine intensely, as if with heat get a sunburn by overexposure to the sun burn, sear, or freeze (tissue) using a hot iron or electric current or a caustic agent use up (energy) create by duplicating data cause a sharp or stinging pain or discomfort
  • third degree - noun interrogation often accompanied by torture to extort information or a confession
  • Burp - noun a reflex that expels wind noisily from the stomach through the mouth verb expel gas from the stomach
  • Bursa - noun a small fluid-filled sac located between movable parts of the body especially at joints a city in northwestern Turkey
  • Bursal - adj. relating to or affecting a bursa
  • Bursitis - noun inflammation of a bursa; frequently in the shoulder
  • Bursitis - noun inflammation of a bursa; frequently in the shoulder
  • aseptic - adj. free of or using methods to keep free of pathological microorganisms
  • Bursitis - noun inflammation of a bursa; frequently in the shoulder
  • calcific - adj. involving or resulting from calcification
  • Bursitis - noun inflammation of a bursa; frequently in the shoulder
  • elbow - noun the joint of a mammal or bird that corresponds to the human elbow the part of a sleeve that covers the elbow joint a sharp bend in a road or river a length of pipe with a sharp bend in ithinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped verb shove one's elbow into another person's ribs push one's way with the elbows
  • Bursitis - noun inflammation of a bursa; frequently in the shoulder
  • hip - adj. informed about the latest trends noun either side of the body below the waist and above the thigh the ball-and-socket joint between the head of the femur and the acetabulum the fruit of a rose plant the structure of the vertebrate skeleton supporting the lower limbs in humans and the hind limbs or corresponding parts in other vertebrates
  • Bursitis - noun inflammation of a bursa; frequently in the shoulder
  • knee - noun the part of a trouser leg that provides the cloth covering for the knee hinge joint in the human leg connecting the tibia and fibula with the femur and protected in front by the patella joint between the femur and tibia in a quadruped; corresponds to the human knee
  • Bursitis - noun inflammation of a bursa; frequently in the shoulder
  • septic - adj. containing or resulting from disease-causing organisms of or relating to or caused by putrefaction
  • Bursitis - noun inflammation of a bursa; frequently in the shoulder
  • shoulder - noun narrow edge of land (usually unpaved) along the side of a road the part of the body between the neck and the upper arm a ball-and-socket joint between the head of the humerus and a cavity of the scapula a cut of beef from the shoulder of the animalverb push with the shoulders carry a burden, either real or metaphoric lift onto one's shoulders
  • Butterbur - noun small Eurasian herb having broad leaves and lilac-pink rayless flowers; found in moist areas
  • Butyric acid - noun an unpleasant smelling fatty acid found especially in butter

Table of contents:

.A | .B | .C | .D | .E | .F | .G | .H | .I | .J | .K | .L | .M

.N | .O | .P | .Q | .R | .S | .T | .U | .V | .W | .X | .Y | .Z

  • Ca-Ca - verb have a bowel movement
  • cytosine - noun a base found in DNA and RNA and derived from pyrimidine; pairs with guanine
  • CRP - noun a byproduct of inflammation; a globulin that is found in the blood in some cases of acute inflammation
  • C-section - noun the delivery of a fetus by surgical incision through the abdominal wall and uterus (from the belief that Julius Caesar was born that way)


  • botulinum - noun anaerobic bacterium producing botulin the toxin that causes botulism


  • C - noun the 3rd letter of the Roman alphabet (music) the keynote of the scale of C major a general-purpose programing language closely associated with the UNIX operating system street names for cocaine a unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second a degree on the centigrade scale of temperature an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compoundsa base found in DNA and RNA and derived from pyrimidine; pairs with guanine one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose) the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second
  • C - noun the 3rd letter of the Roman alphabet (music) the keynote of the scale of C major a general-purpose programing language closely associated with the UNIX operating system street names for cocaine a unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second a degree on the centigrade scale of temperature an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compoundsa base found in DNA and RNA and derived from pyrimidine; pairs with guanine one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose) the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second
  • C - noun the 3rd letter of the Roman alphabet (music) the keynote of the scale of C major a general-purpose programing language closely associated with the UNIX operating system street names for cocaine a unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second a degree on the centigrade scale of temperature an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compoundsa base found in DNA and RNA and derived from pyrimidine; pairs with guanine one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose) the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second
  • cervical vertebra - noun one of 7 vertebrae in the human spine located in the neck region
  • cervical vertebra - noun one of 7 vertebrae in the human spine located in the neck region
  • cervical vertebra - noun one of 7 vertebrae in the human spine located in the neck region
  • cervical vertebra - noun one of 7 vertebrae in the human spine located in the neck region
  • cervical vertebra - noun one of 7 vertebrae in the human spine located in the neck region
  • cervical vertebra - noun one of 7 vertebrae in the human spine located in the neck region
  • cervical vertebra - noun one of 7 vertebrae in the human spine located in the neck region
  • Ca - noun a state in the western United States on the Pacific; the 3rd largest state; known for earthquakes a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
  • CA - noun a state in the western United States on the Pacific; the 3rd largest state; known for earthquakes a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
  • ca - noun a state in the western United States on the Pacific; the 3rd largest state; known for earthquakes a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
  • CABG - noun open-heart surgery in which the rib cage is opened and a section of a blood vessel is grafted from the aorta to the coronary artery to bypass the blocked section of the coronary artery and improve the blood supply to the heart
  • Cachectic - adj. relating to or having the symptoms of cachexia
  • Cachexia - noun any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease
  • CAD - noun someone who is morally reprehensible software used in art and architecture and engineering and manufacturing to assist in precision drawing
  • Cadaver - noun the dead body of a human being
  • Cadmium - noun a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores
  • Caduceus - noun an insignia used by the medical profession; modeled after the staff of Hermes
  • Caecal - adj. of or like a cecum
  • Caecum - noun the cavity in which the large intestine begins and into which the ileum opens
  • Caffeine - noun a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
  • Calorie - noun unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure a unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure; used by nutritionists to characterize the energy-producing potential in food
  • Calamine - noun a white mineral; a common ore of zinc
  • Calcaneus - noun the largest tarsal bone; forms the human heel
  • Calcification - noun a process that impregnates something with calcium (or calcium salts) an inflexible and unchanging state tissue hardened by deposition of lime salts
  • Calcitonin - noun thyroid hormone that tends to lower the level of calcium in the blood plasma and inhibit resorption of bone
  • Calcium - noun a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
  • Calculus - noun the branch of mathematics that is concerned with limits and with the differentiation and integration of functions a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body an incrustation that forms on the teeth and gums
  • Calefacient - adj. producing the sensation of heat when applied to the body
  • Calf - noun young of domestic cattle young of various large placental mammals e.g. whale or giraffe or elephant or buffalo the muscular back part of the shank fine leather from the skin of a calf
  • Calf bone - noun the outer and thinner of the two bones of the human leg between the knee and ankle
  • CALLA - noun water arum South African plant widely cultivated for its showy pure white spathe and yellow spadix
  • Callosity - noun an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot) devoid of passion or feeling; hardheartedness
  • Callus - noun (botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid bony tissue formed during the healing of a fractured bone an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot) verb form a callus or calluses cause a callus to form on
  • Calorie - noun unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure a unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure; used by nutritionists to characterize the energy-producing potential in food
  • Camelpox - noun a viral disease of camels closely related to smallpox
  • Camisole - noun a short negligee a short sleeveless undergarment for women
  • Cancer - noun type genus of the family Cancridae the fourth sign of the zodiac; the sun is in this sign from about June 21 to July 22 a small zodiacal constellation in the northern hemisphere; between Leo and Gemini (astrology) a person who is born while the sun is in Cancer any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream
  • adult - adj. (of animals) fully developed noun any mature animal a fully developed person from maturity onward
  • adult - adj. (of animals) fully developed noun any mature animal a fully developed person from maturity onward
  • Candida albicans - noun a parasitic fungus that can infect the mouth or the skin or the intestines or the vagina
  • Candidiasis - noun an infection caused by fungi of the genus Monilia or Candida (especially Candida albicans)
  • Canker sore - noun an ulceration (especially of the lips or lining of the mouth)
  • Cannabis - noun the most commonly used illicit drug; considered a soft drug, it consists of the dried leaves of the hemp plant; smoked or chewed for euphoric effect any plant of the genus Cannabis; a coarse bushy annual with palmate leaves and clusters of small green flowers; yields tough fibers and narcotic drugs
  • Cannula - noun a small flexible tube inserted into a body cavity for draining off fluid or introducing medication
  • Capillary - adj. long and slender with a very small internal diameterof or relating to hair noun a tube of small internal diameter; holds liquid by capillary action any of the minute blood vessels connecting arterioles with venules
  • Capitation - noun a tax levied on the basis of a fixed amount per person
  • Capsaicin - noun colorless pungent crystalline compound derived from capsicum; source of the hotness of hot peppers of the genus Capsicum such as chili and cayenne and jalapeno
  • Capsid - noun the outer covering of protein surrounding the nucleic acid of a virus a variety of leaf bug
  • Capsule - noun a pill in the form of a small rounded gelatinous container with medicine inside a small container a structure that encloses a body part a dry dehiscent seed vessel or the spore-containing structure of e.g. mosses a pilot's seat in an airplane that can be forcibly ejected in the case of an emergency; then the pilot descends by parachute a spacecraft designed to transport people and support human life in outer space a shortened version of a written work verb enclose in a capsule put in a short or concise form; reduce in volume
  • Carbo loading - noun a diet of foods high in starch that increases carbohydrate reserves in muscles
  • Carbohydrate - noun an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain
  • Carbolic acid - noun a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally
  • Carbon dioxide - noun a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
  • Carcinogen - noun any substance that produces cancer
  • Carcinoma - noun any malignant tumor derived from epithelial tissue; one of the four major types of cancer
  • Carcinoma in situ - noun a cluster of malignant cells that has not yet invaded the deeper epithelial tissue or spread to other parts of the body
  • Cardiac - adj. of or relating to the heart
  • Cardiac muscle - noun the muscle tissue of the heart; adapted to continued rhythmic contraction
  • Cardiac output - noun the amount of blood pumped out by the ventricles in a given period of time
  • Cardiac tamponade - noun mechanical compression of the heart resulting from large amounts of fluid collecting in the pericardial space and limiting the heart's normal range of motion
  • Cardiologist - noun a specialist in cardiology; a specialist in the structure and function and disorders of the heart
  • Cardiology - noun the branch of medicine dealing with the heart and its diseases
  • Cardiomyopathy - noun a disorder (usually of unknown origin) of the heart muscle (myocardium)
  • Cardiopulmonary - adj. of or pertaining to or affecting both the heart and the lungs and their functions
  • Cardiopulmonary resuscitation - noun an emergency procedure consisting of external cardiac massage and artificial respiration; the first treatment for a person who has collapsed and has no pulse and has stopped breathing; attempts to restore circulation of the blood and prevent death or brain damage due to lack of oxygen
  • Cardiovascular - adj. of or pertaining to or involving the heart and blood vessels
  • Cardiovascular system - noun the organs and tissues involved in circulating blood and lymph through the body
  • Carditis - noun inflammation of the heart
  • Caries - noun soft decayed area in a tooth; progressive decay can lead to the death of a tooth
  • Carminative - adj. relieving gas in the alimentary tract (colic or flatulence or griping) noun medication that prevents the formation of gas in the alimentary tract or eases its passing
  • Carotenemia - noun excess carotene in the blood stream; can cause the skin to turn a pale yellow or red color
  • Carotenoid - noun any of a class of highly unsaturated yellow to red pigments occurring in plants and animals
  • Carotid - adj. of or relating to either of the two major arteries supplying blood to the head and neck
  • Carotid artery - noun either of two major arteries of the neck and head; branches from the aorta
  • Carotid body - noun a chemoreceptor located near the bifurcations of the carotid arteries; monitors oxygen content of the blood and helps control respiration
  • Carpal bone - noun any of the eight small bones of the wrist of primates
  • Carpal tunnel syndrome - noun a painful disorder caused by compression of a nerve in the carpal tunnel; characterized by discomfort and weakness in the hands and fingers and by sensations of tingling, burning or numbness
  • Cartilage - noun tough elastic tissue; mostly converted to bone in adults
  • Cascade - noun a succession of stages or operations or processes or units a small waterfall or series of small waterfalls a sudden downpour (as of tears or sparks etc) likened to a rain shower verbarrange (open windows) on a computer desktop so that they overlap each other, with the title bars visible rush down in big quantities, like a cascade
  • Casein - noun a milk protein used in making e.g. plastics and adhesives a water-base paint made with a protein precipitated from milk
  • Caseous - adj. of damaged or necrotic tissue; cheeselike
  • Cassette - noun a container that holds a magnetic tape used for recording or playing sound or video
  • Cast - adj. (of molten metal or glass) formed by pouring or pressing into a mold noun the act of throwing dice object formed by a moldbandage consisting of a firm covering (often made of plaster of Paris) that immobilizes broken bones while they heal the actors in a play the distinctive form in which a thing is made a violent throwthe act of throwing a fishing line out over the water by means of a rod and reel container into which liquid is poured to create a given shape when it hardens the visual appearance of something or someone verb form by pouring (e.g., wax or hot metal) into a cast or mold select to play,sing, or dance a part in a play, movie, musical, opera, or ballet deposit assign the roles of (a movie or a play) to actors eject the contents of the stomach through the mouthformulate in a particular style or language choose at random throw forcefully get rid of put or send forth move about aimlessly or without any destination, often in search of food or employment
  • Castration - noun surgical removal of the testes or ovaries (usually to inhibit hormone secretion in cases of breast cancer in women or prostate cancer in men) neutering a male animal by removing the testicles the deletion of objectionable parts from a literary work
  • CAT scan - noun an image produced by scanning
  • Cat scratch disease - noun a disease thought to be transmitted to humans by a scratch from a cat
  • Catabolism - noun breakdown in living organisms of more complex substances into simpler ones together with release of energy
  • Catalepsy - noun a trancelike state with loss of voluntary motion and failure to react to stimuli
  • Catalysis - noun acceleration of a chemical reaction induced the presence of material that is chemically unchanged at the end of the reaction
  • Catalyst - noun something that causes an important event to happen (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
  • Catamenia - noun the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause
  • Cataplasm - noun a medical dressing consisting of a soft heated mass of meal or clay that is spread on a cloth and applied to the skin to treat inflamed areas or improve circulation etc.
  • Cataract - noun a large waterfall; violent rush of water over a precipice clouding of the natural lens of the eye
  • Catatonic - adj. characterized by catatonia especially either rigidity or extreme laxness of limbs
  • Catecholamine - noun any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland
  • Cathartic - adj. strongly laxative emotionally purging (of e.g. art)emotionally purging noun a purging medicine; stimulates evacuation of the bowels
  • Catheter - noun a thin flexible tube inserted into the body to permit introduction or withdrawal of fluids or to keep the passageway open
  • Cathexis - noun (psychoanalysis) the libidinal energy invested in some idea or person or object
  • Cation - noun a positively charged ion
  • Caudal - adj. situated in or directed toward the part of the body from which the tail arises resembling a tail constituting or relating to a tail adv. toward the posterior end of the body
  • Caudal anesthesia - noun regional anesthesia resulting from injection of an anesthetic into the caudal end of the spinal canal; now largely replaced by epidural anesthesia
  • Caudal block - noun regional anesthesia resulting from injection of an anesthetic into the caudal end of the spinal canal; now largely replaced by epidural anesthesia
  • Caudate nucleus - noun a tail-shaped basal ganglion located in a lateral ventricle of the brain
  • Caul - noun the inner membrane of embryos in higher vertebrates (especially when covering the head at birth) part of the peritoneum attached to the stomach and to the colon and covering the intestines
  • Caulophyllum thalictroides - noun tall herb of eastern North America and Asia having blue berrylike fruit and a thick knotty rootstock formerly used medicinally
  • Causalgia - noun a burning pain in a limb along the course of a peripheral nerve; usually associated with skin changes
  • Cauterization - noun the act of coagulating blood and destroying tissue with a hot iron or caustic agent or by freezing
  • Cavernous sinus - noun either of a pair of large venous sinuses in the cranial cavity
  • Cavy - noun short-tailed rough-haired South American rodent
  • CBC - noun counting the number of white and red blood cells and the number of platelets in 1 cubic millimeter of blood
  • CD4 - noun a glycoprotein that is found primarily on the surface of helper T cells
  • CD8 - noun a membrane glycoprotein that is found primarily on the surface of cytotoxic T cells
  • T cell - noun a small lymphocyte developed in the thymus; it orchestrates the immune system's response to infected or malignant cells
  • CDC - noun a federal agency in the Department of Health and Human Services; located in Atlanta; investigates and diagnoses and tries to control or prevent diseases (especially new and unusual diseases)
  • cDNA - noun single-stranded DNA that is complementary to messenger RNA or DNA that has been synthesized from messenger RNA by reverse transcriptase
  • Cecal - adj. of or like a cecum
  • Cecum - noun the cavity in which the large intestine begins and into which the ileum opens
  • Celiac disease - noun a disorder in children and adults; inability to tolerate wheat protein (gluten); symptoms include foul-smelling diarrhea and emaciation; often accompanied by lactose intolerance
  • Cell - noun (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals a device that delivers an electric current as the result of a chemical reaction a room where a prisoner is kept small room is which a monk or nun lives any small compartment a small unit serving as part of or as the nucleus of a larger political movement a hand-held mobile radiotelephone for use in an area divided into small sections, each with its own short-range transmitter/receiver
  • Cellulite - noun lumpy deposits of body fat especially on women's thighs etc.
  • Cellulitis - noun an inflammation of body tissue (especially that below the skin) characterized by fever and swelling and redness and pain
  • Centenarian - adj. being at least 100 years old noun someone who is at least 100 years old
  • Research - noun systematic investigation to establish facts a search for knowledge verb inquire into attempt to find out in a systematically and scientific manner
  • Centimeter - noun a metric unit of length equal to one hundredth of a meter
  • cm - noun a metric unit of length equal to one hundredth of a metera radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei
  • cM - noun a metric unit of length equal to one hundredth of a metera radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei
  • Central - adj. in or near a center or constituting a center; the inner area centrally located and easy to reach used in the description of a place that in the middle of another place serving as an essential component noun a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication
  • Central nervous system - noun the portion of the vertebrate nervous system consisting of the brain and spinal cord
  • CNS - noun the portion of the vertebrate nervous system consisting of the brain and spinal cord
  • Centromere - noun a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape
  • Cephalic - adj. of or relating to the head
  • Cerebellar - adj. relating to or associated with the cerebellum
  • Cerebellum - noun a major division of the vertebrate brain; situated above the medulla oblongata and beneath the cerebrum in humans
  • Cerebral - adj. involving intelligence rather than emotions or instinctof or relating to the cerebrum or brain
  • CAGE - noun an enclosure made or wire or metal bars in which birds or animals can be kept the net that is the goal in ice hockeyUnited States composer of avant-garde music (1912-1992)something that restricts freedom as a cage restricts movement a movable screen placed behind home base to catch balls during batting practice verb confine in a cage
  • Cerebral cortex - noun the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum
  • Cerebral palsy - noun a loss or deficiency of motor control with involuntary spasms caused by permanent brain damage present at birth
  • Cerebrospinal fluid - noun clear liquid produced in the ventricles of the brain; fills and protects cavities in the brain and spinal cord
  • Cerebrovascular - adj. of or relating to the brain and the blood vessels that supply it
  • Cerebrovascular accident - noun a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain
  • Cerebrovascular accident - noun a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain
  • CVA - noun a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain
  • Cerebrum - noun anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans
  • Cervical - adj. relating to or associated with the neck of or relating to the cervix of the uterus
  • Cervical cap - noun a contraceptive device consisting of a small thimble-shaped cup that is placed over the uterine cervix to prevent the entrance of spermatozoa
  • Cervicitis - noun inflammation of the uterine cervix
  • Cervix - noun necklike opening to the uterus the part of an organism that connects the head to the rest of the body
  • Cesarean section - noun the delivery of a fetus by surgical incision through the abdominal wall and uterus (from the belief that Julius Caesar was born that way)
  • Cesarian section - noun the delivery of a fetus by surgical incision through the abdominal wall and uterus (from the belief that Julius Caesar was born that way)
  • CF - adv. compare (used in texts to point the reader to another location in the text) noun the most common congenital disease; the child's lungs and intestines and pancreas become clogged with thick mucus; caused by defect in a single gene; there is no cure a radioactive transuranic element; discovered by bombarding curium with alpha particles
  • Chalazion - noun a small sebaceous cyst of the eyelid resulting when a Meibomian gland is blocked
  • Chamomile - noun Eurasian plant apple-scented foliage and white-rayed flowers and feathery leaves used medicinally; in some classification systems placed in genus Anthemis
  • Chancre - noun a small hard painless nodule at the site of entry of a pathogen (as syphilis)
  • Change of life - noun the time in a woman's life in which the menstrual cycle ends
  • Chaperone - noun one who accompanies and supervises a young woman or gatherings of young people verb accompany as a chaperone
  • Charles Darwin - noun English natural scientist who formulated a theory of evolution by natural selection (1809-1882)
  • Charley-horse - noun a muscular cramp (especially in the thigh or calf) following vigorous exercise
  • Checkpoint - noun a place (as at a frontier) where travellers are stopped for inspection and clearance
  • Cheek - noun either side of the face below the eyes impudent aggressiveness either of the two large fleshy masses of muscular tissue that form the human rump an impudent statement verbspeak impudently to
  • Cheilitis - noun inflammation and cracking of the skin of the lips
  • Chekhov - noun Russian dramatist whose plays are concerned with the difficulty of communication between people (1860-1904)
  • Chemical reaction - noun (chemistry) a process in which one or more substances are changed into others
  • Chemical terrorism - noun terrorism using the chemical agents of chemical warfare; can undermine the personal security of citizens
  • Chemosis - noun edema of the mucous membrane of the eyeball and eyelid lining
  • Chemotherapy - noun the use of chemical agents to treat or control disease (or mental illness)
  • Chest - noun box with a lid; used for storage; usually large and sturdy furniture with drawers for keeping clothes the part of the human torso between the neck and the diaphragm or the corresponding part in other vertebrates
  • Chickenpox - noun an acute contagious disease caused by herpes varicella zoster virus; causes a rash of vesicles on the face and body
  • Chilblain - noun inflammation of the hands and feet caused by exposure to cold and moisture
  • Child abuse - noun the physical or emotional or sexual mistreatment of children
  • Child neglect - noun failure of caretakers to provide adequate emotional and physical care for a child
  • Childbed fever - noun serious form of septicemia contracted by a woman during childbirth or abortion (usually attributable to unsanitary conditions); formerly widespread but now uncommon
  • Childhood - noun the state of a child between infancy and adolescence the time of person's life when they are a child
  • Chimera - noun a grotesque product of the imagination (Greek mythology) fire-breathing female monster with a lion's head and a goat's body and a serpent's tail; daughter of Typhon
  • Chin - noun the protruding part of the lower jaw Kamarupan languages spoken in western Burma and Bangladesh and easternmost India verb raise oneself while hanging from one's hands until one's chin is level with the support bar
  • Chinese restaurant syndrome - noun headache and tingling or burning feelings and sweating caused by eating food that contains monosodium glutamate
  • Chiron - noun an asteroid discovered in 1977; it is unique in having an orbit lying mainly between the orbits of Saturn and Uranus(Greek mythology) the learned centaur who tutored Achilles, Asclepius, Hercules, Jason, and other heroes
  • Chiropractic - noun a method of treatment that manipulates body structures (especially the spine) to relieve low back pain or even headache or high blood pressure
  • Chlamydia - noun coccoid rickettsia infesting birds and mammals; cause infections of eyes and lungs and genitourinary tract a sexually transmitted infection caused by bacteria of the genus Chlamydia
  • Chlamydia trachomatis - noun bacteria responsible for the sexually transmitted diseases chlamydia and lymphogranuloma venereum
  • Chloral hydrate - noun a colorless crystalline drug used as a sedative; irritates the stomach and can be addictive
  • Chloride - noun any salt of hydrochloric acid (containing the chloride ion) any compound containing a chlorine atom
  • Chlorobenzylidenemalononitrile - noun a tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema
  • Chloroform - noun a volatile liquid haloform (CHCl3); formerly used as an anesthetic verb anesthetize with chloroform
  • Chloropicrin - noun a heavy colorless insoluble liquid compound that causes tears and vomiting; used as a pesticide and as tear gas
  • Chloroprene - noun derivative of butadiene used in making neoprene by polymerization
  • Chocolate - noun a medium brown to dark-brown color a food made from roasted ground cacao beans a beverage made from cocoa powder and milk and sugar; usually drunk hot
  • Choking - noun the act of suffocating (someone) by constricting the windpipe a condition caused by blocking the airways to the lungs (as with food or swelling of the larynx)
  • Cholangiography - noun roentgenographic examination of the bile ducts after a contrast medium has been injected
  • Cholecystectomy - noun surgical removal of the gall bladder (usually for relief of gallstone pain)
  • Cholera - noun an acute intestinal infection caused by ingestion of contaminated water or food
  • Cholestasis - noun a condition in which little or no bile is secreted or the flow of bile into the digestive tract is obstructed
  • Cholesterol - noun an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues
  • Cholesterol - noun an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues
  • Bad - adj. feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad') (of foodstuffs) not in an edible or usable condition not working properly reproduced fraudulently having undesirable or negative qualities characterized by wickedness or immorality capable of harming physically unsound or diseasedvery intense not financially safe or secure nonstandard below average in quality or performance not capable of being collectedfeeling or expressing regret or sorrow or a sense of loss over something done or undone adv. very much; strongly with great intensity (`bad' is a nonstandard variant for `badly') noun that which is below standard or expectations as of ethics or decency
  • Cholesterol - noun an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues
  • good - adj. thorough generally admired resulting favorably not left to spoil not forged having desirable or positive qualities especially those suitable for a thing specified morally admirable in excellent physical condition appealing to the mind agreeable or pleasingmost suitable or right for a particular purpose capable of pleasingof moral excellence promoting or enhancing well-being having the normally expected amount with or in a close or intimate relationship exerting force or influence tending to promote physical well-being; beneficial to health deserving of esteem and respecthaving or showing knowledge and skill and aptitude financially sound adv. (often used as a combining form) in a good or proper or satisfactory manner or to a high standard (`good' is a nonstandard dialectal variant for `well') in a complete and thorough manner (`good' is sometimes used informally for `thoroughly') noun moral excellence or admirableness that which is pleasing or valuable or useful benefit articles of commerce
  • Chorea - noun any of several degenerative nervous disorders characterized by spasmodic movements of the body and limbschorea in dogs
  • Chorion - noun outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals)
  • Chorionic villus sampling - noun a prenatal test to detect birth defects at an early stage of pregnancy; tissue from the chorionic villi is assayed
  • Choroid - noun a highly vascular membrane in the eye between the retina and the sclera
  • Chromaesthesia - noun a form of synesthesia in which nonvisual stimulation results in the experience of color sensations
  • Chromatin - noun the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condenses into chromosomes
  • GC - noun 1,000,000,000 periods per second
  • Chromesthesia - noun a form of synesthesia in which nonvisual stimulation results in the experience of color sensations
  • Chromosome - noun a threadlike body in the cell nucleus that carries the genes in a linear order
  • Chronic - adj. being long-lasting and recurrent or characterized by long suffering
  • Chronic bronchitis - noun a form of bronchitis characterized by excess production of sputum leading to a chronic cough and obstruction of air flow
  • COLD - adj. lacking the warmth of life of a seeker; far from the object sought unconscious from a blow or shock or intoxicationfeeling or showing no enthusiasm having lost freshness through passage of time used of physical coldness; having a low or inadequate temperature or feeling a sensation of coldness or having been made cold by e.g. ice or refrigeration extended meanings; especially of psychological coldness; without human warmth or emotion without compunction or human feeling sexually unresponsive so intense as to be almost uncontrollable no longer new; uninteresting marked by errorless familiarity (color) giving no sensation of warmth noun the sensation produced by low temperatures a mild viral infection involving the nose and respiratory passages (but not the lungs) the absence of heat
  • Chronic wasting disease - noun a wildlife disease (akin to bovine spongiform encephalitis) that affects deer and elk
  • Chyle - noun a milky fluid consisting of lymph and emulsified fats; formed in the small intestine during digestion of ingested fats
  • Chylomicron - noun a microscopic particle of triglycerides produced in the intestines during digestion; in the bloodstream they release their fatty acids into the blood
  • Chyme - noun a semiliquid mass of partially digested food that passes from the stomach through the pyloric sphincter into the duodenum
  • Ci - noun a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second
  • Curie - noun French chemist (born in Poland) who won two Nobel prizes; one (with her husband and Henri Becquerel) for research on radioactivity and another for her discovery of radium and polonium (1867-1934) French physicist; husband of Marie Curie (1859-1906)a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second
  • Cigar - noun a roll of tobacco for smoking
  • Cigarette - noun finely ground tobacco wrapped in paper; for smoking
  • Ciliary body - noun the part of the tunic of the eye between the choroid coat and the iris
  • Cilium - noun a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms any of the short curved hairs that grow from the edges of the eyelids
  • Circadian - adj. of or relating to biological processes occurring at 24-hour intervals
  • Circulation - noun the spread or transmission of something (as news or money) to a wider group or area the dissemination of copies of periodicals (as newspapers or magazines) free movement or passage through a series of vessels (as of water through pipes or sap through a plant) movement through a circuit; especially the movement of blood through the heart and blood vessels number of copies of a newspaper or magazine that are sold (library science) the count of books that are loaned by a library over a specified period
  • Circulatory - adj. relating to circulatory system or to circulation of the blood of or relating to circulation
  • Circulatory system - noun the organs and tissues involved in circulating blood and lymph through the body
  • Circumcision - noun the act of circumcising; surgical removal of the foreskin of males the act of circumcising performed on males eight days after birth as a Jewish and Muslim religious rite (Roman Catholic Church and Anglican Church) feast day celebrating the circumcision of Jesus; celebrated on January 1st
  • Circumflex - noun a diacritical mark (^) placed above a vowel in some languages to indicate a special phonetic quality
  • Cirrhosis - noun a chronic disease interfering with the normal functioning of the liver; the major cause is chronic alcoholism
  • Citrulline - noun an amino acid that does not occur in proteins but is an intermediate in the conversion of ornithine to arginine
  • Cl - noun a metric unit of volume equal to one hundredth of a liter a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water)
  • chloride - noun any salt of hydrochloric acid (containing the chloride ion) any compound containing a chlorine atom
  • Clade - noun a group of biological taxa or species that share features inherited from a common ancestor
  • Clap - noun a sudden very loud noise a sharp abrupt noise as if two objects hit together; may be repeated a common venereal disease caused by the bacterium Neisseria gonorrhoeae; symptoms are painful urination and pain around the urethra verb clap one's hands together strike together so as to produce a sharp percussive noisestrike with the flat of the hand; usually in a friendly way, as in encouragement or greeting put quickly or forcibly strike the air in flight cause to strike the air in flight clap one's hands or shout after performances to indicate approval
  • Claudication - noun disability of walking due to crippling of the legs or feet
  • Claustrophobia - noun a morbid fear of being closed in a confined space
  • Clavicle - noun bone linking the scapula and sternum
  • Clavus - noun a hard thickening of the skin (especially on the top or sides of the toes) caused by the pressure of ill-fitting shoes
  • Cleft lip - noun a congenital cleft in the middle of the upper lip
  • Climacteric - noun a period in a man's life corresponding to menopause the time in a woman's life in which the menstrual cycle ends
  • Clinical - adj. scientifically detached; unemotional relating to a clinic or conducted in or as if in a clinic and depending on direct observation of patients
  • Clinical depression - noun a state of depression and anhedonia so severe as to require clinical intervention
  • Clinical psychology - noun the branch of psychology concerned with the treatment of abnormal mentation and behavior
  • Clinical trial - noun a rigorously controlled test of a new drug or a new invasive medical device on human subjects; in the United States it is conducted under the direction of the FDA before being made available for general clinical use
  • Clinodactyly - noun a congenital defect in which one or more toes or fingers are abnormally positioned
  • CLIP - noun a sharp slanting blow the act of clipping or snippingany of various small fasteners used to hold loose articles togetheran article of jewelry that can be clipped onto a hat or dress a metal frame or container holding cartridges; can be inserted into an automatic gun an instance or single occasion for some event verbterminate or abbreviate before its intended or proper end or its full extent attach with a clip cultivate, tend, and cut back the growth ofsever or remove by pinching or snipping run at a moderately swift pace
  • Clip - noun a sharp slanting blow the act of clipping or snippingany of various small fasteners used to hold loose articles togetheran article of jewelry that can be clipped onto a hat or dress a metal frame or container holding cartridges; can be inserted into an automatic gun an instance or single occasion for some event verbterminate or abbreviate before its intended or proper end or its full extent attach with a clip cultivate, tend, and cut back the growth ofsever or remove by pinching or snipping run at a moderately swift pace
  • Clitoral - adj. of or relating to the clitoris
  • Clitoris - noun a female sexual organ homologous to the penis
  • Cloaca - noun a waste pipe that carries away sewage or surface water
  • Clone - noun a group of genetically identical cells or organisms derived from a single cell or individual by some kind of asexual reproduction an unauthorized copy or imitation a person who is almost identical to another verb make multiple identical copies of
  • Cloning - noun a general term for the research activity that creates a copy of some biological entity (a gene or organism or cell)
  • Clostridium - noun spindle-shaped bacterial cell especially one swollen at the center by an endospore
  • Clostridium perfringens - noun anaerobic Gram-positive rod bacterium that produces epsilon toxin; can be used as a bioweapon
  • Club drug - noun a controlled substance that is usually taken by young people at dance clubs and raves
  • Clubfoot - noun congenital deformity of the foot usually marked by a curled shape or twisted position of the ankle and heel and toes
  • Cluster - noun a grouping of a number of similar things verb come together as in a cluster or flock gather or cause to gather into a cluster
  • Cluster headache - noun a painful recurring headache associated with the release of histamine from cells
  • cM - noun a metric unit of length equal to one hundredth of a metera radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei
  • cm - noun a metric unit of length equal to one hundredth of a metera radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei
  • centimeter - noun a metric unit of length equal to one hundredth of a meter
  • CM - noun a metric unit of length equal to one hundredth of a metera radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei
  • coccidioidomycosis - noun an infection of the lungs and skin characterized by excessive sputum and nodules
  • CMV - noun any of a group of herpes viruses that enlarge epithelial cells and can cause birth defects; can affect humans with impaired immunological systems
  • cytomegalovirus - noun any of a group of herpes viruses that enlarge epithelial cells and can cause birth defects; can affect humans with impaired immunological systems
  • CNS - noun the portion of the vertebrate nervous system consisting of the brain and spinal cord
  • central nervous system - noun the portion of the vertebrate nervous system consisting of the brain and spinal cord
  • Coagulation - noun the process of forming semisolid lumps in a liquid
  • Coarctation - noun (biology) a narrowing or constriction of a vessel or canal; especially a congenital narrowing of the aorta tight or narrow compression
  • Cobalamin - noun a B vitamin that is used to treat pernicious anemia
  • Cocaine - noun a narcotic (alkaloid) extracted from coca leaves; used as a surface anesthetic or taken for pleasure; can become powerfully addictive
  • Cocci - noun any spherical or nearly spherical bacteria
  • Coccidioidomycosis - noun an infection of the lungs and skin characterized by excessive sputum and nodules
  • CM - noun a metric unit of length equal to one hundredth of a metera radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei
  • Coccus - noun any spherical or nearly spherical bacteria
  • Coccygeal - adj. of or relating to or near the coccyx
  • Coccyx - noun the end of the vertebral column in humans and tailless apes
  • Cochlea - noun the snail-shaped tube (in the inner ear coiled around the modiolus) where sound vibrations are converted into nerve impulses by the organ of Corti
  • Cochlear - adj. of or relating to the cochlea of the ear
  • Cod liver oil - noun an oil obtained from the livers of cod and similar fishes; taken orally as a source of vitamins A and D
  • Code - noun a coding system used for transmitting messages requiring brevity or secrecy (computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions a set of rules or principles or laws (especially written ones) verb attach a code to convert ordinary language into code
  • Coding DNA - noun sequence of a gene's DNA that transcribes into protein structures
  • Codon - noun a specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid
  • Coenzyme - noun a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes
  • Coeval - adj. of the same period noun a person of nearly the same age as another
  • Cognition - noun the psychological result of perception and learning and reasoning
  • Cognitive - adj. of or being or relating to or involving cognition
  • Cognitive science - noun the field of science concerned with cognition; includes parts of cognitive psychology and linguistics and computer science and cognitive neuroscience and philosophy of mind
  • Cohort - noun a band of warriors (originally a unit of a Roman Legion) a company of companions or supporters a group people having approximately the same age
  • Coinsurance - noun insurance issued jointly by two or more underwriters
  • Coitus - noun the act of sexual procreation between a man and a woman; the man's penis is inserted into the woman's vagina and excited until orgasm and ejaculation occur
  • Coitus interruptus - noun a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation
  • Coke - noun street names for cocaine carbon fuel produced by distillation of coal Coca Cola is a trademarked cola verb become coke
  • COLD - adj. lacking the warmth of life of a seeker; far from the object sought unconscious from a blow or shock or intoxicationfeeling or showing no enthusiasm having lost freshness through passage of time used of physical coldness; having a low or inadequate temperature or feeling a sensation of coldness or having been made cold by e.g. ice or refrigeration extended meanings; especially of psychological coldness; without human warmth or emotion without compunction or human feeling sexually unresponsive so intense as to be almost uncontrollable no longer new; uninteresting marked by errorless familiarity (color) giving no sensation of warmth noun the sensation produced by low temperatures a mild viral infection involving the nose and respiratory passages (but not the lungs) the absence of heat
  • Cold sore - noun caused by herpes simplex virus type 1 (HSV-1)
  • Colic - noun acute abdominal pain (especially in infants)
  • Colitis - noun inflammation of the colon
  • Collagen - noun a fibrous scleroprotein in bone and cartilage and tendon and other connective tissue; yields gelatin on boiling
  • Collarbone - noun bone linking the scapula and sternum
  • Collateral - adj. descended from a common ancestor but through different lines situated or running side by side accompany, concomitant serving to support or corroborate noun a security pledged for the repayment of a loan
  • Colon - noun the part of the large intestine between the cecum and the rectum; it extracts moisture from food residues before they are excreted a punctuation mark (:) used after a word introducing a series or an example or an explanation (or after the salutation of a business letter) a port city at the Caribbean entrance to the Panama Canal the basic unit of money in Costa Rica; equal to 100 centimosthe basic unit of money in El Salvador; equal to 100 centavos
  • Colon Cancer - noun a malignant tumor of the colon; early symptom is bloody stools
  • Colonic - adj. of or relating to the colon noun a water enema given to flush out the colon
  • Colonic - adj. of or relating to the colon noun a water enema given to flush out the colon
  • adjective - adj. relating to court practice and procedure as opposed to the principles of law of or relating to or functioning as an adjective noun the word class that qualifies nouns a word that expresses an attribute of something
  • Colonic - adj. of or relating to the colon noun a water enema given to flush out the colon
  • noun - noun a word that can serve as the subject or object of a verb a word that can be used to refer to a person or place or thing
  • Colonoscope - noun an elongated fiberoptic endoscope for examining the entire colon from cecum to rectum
  • Colonoscopy - noun visual examination of the colon (with a colonoscope) from the cecum to the rectum; requires sedation
  • Colorectal - adj. relating to or affecting the colon and the rectum
  • Colostomy - noun a surgical operation that creates an opening from the colon to the surface of the body to function as an anus
  • Colostrum - noun milky fluid secreted for the first day or two after parturition
  • Coma - noun a state of deep and often prolonged unconsciousness; usually the result of disease or injury (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed a usually terminal tuft of hairs especially on a seed
  • Comedo - noun a black-tipped plug clogging a pore of the skin
  • Commensal - adj. living in a state of commensalism noun either of two different animal or plant species living in close association but not interdependent
  • Common bile duct - noun a duct formed by the hepatic and cystic ducts; opens into the duodenum
  • Common cold - noun a mild viral infection involving the nose and respiratory passages (but not the lungs)
  • Complementary DNA - noun single-stranded DNA that is complementary to messenger RNA or DNA that has been synthesized from messenger RNA by reverse transcriptase
  • Complementary medicine - noun the practice of medicine that combines traditional medicine with alternative medicine
  • Complete blood count - noun counting the number of white and red blood cells and the number of platelets in 1 cubic millimeter of blood
  • Complication - noun the act or process of complicating a development that complicates a situation a situation or condition that is complex or confused any disease or disorder that occurs during the course of (or because of) another disease puzzling complexity
  • Compound fracture - noun bone fracture associated with lacerated soft tissue or an open wound
  • Compound microscope - noun light microscope that has two converging lens systems: the objective and the eyepiece
  • Compress - noun a cloth pad or dressing (with or without medication) applied firmly to some part of the body (to relieve discomfort or reduce fever) verb squeeze or press together make more compact by or as if by pressing
  • Compression - noun applying pressure encoding information while reducing the bandwidth or bits required the process or result of becoming smaller or pressed together an increase in the density of something
  • Compression fracture - noun fracture in which the bone collapses (especially in short bones such as vertebrae)
  • Computed tomography - noun a method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis
  • Computerized axial tomography - noun a method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis
  • CAT - noun feline mammal usually having thick soft fur and no ability to roar: domestic cats; wildcats a spiteful woman gossip a method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis any of several large cats typically able to roar and living in the wild a large tracked vehicle that is propelled by two endless metal belts; frequently used for moving earth in construction and farm work a whip with nine knotted cords the leaves of the shrub Catha edulis which are chewed like tobacco or used to make tea; has the effect of a euphoric stimulant an informal term for a youth or man verb beat with a cat-o'-nine-tails eject the contents of the stomach through the mouth
  • Computerized tomography - noun a method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis
  • Concatenate - verb add by linking or joining so as to form a chain or series arranged into chained list
  • Conception - noun the act of becoming pregnant; fertilization of an ovum by a spermatozoon the creation of something in the mind an abstract or general idea inferred or derived from specific instancesthe event that occurred at the beginning of something
  • Concordance - noun an index of all main words in a book along with their immediate contexts agreement of opinions a harmonious state of things in general and of their properties (as of colors and sounds); congruity of parts with one another and with the whole
  • Concordant - adj. being of the same opinion in keeping
  • Concussion - noun any violent blow injury to the brain caused by a blow; usually resulting in loss of consciousness
  • Condition - noun the procedure that is varied in order to estimate a variable's effect by comparison with a control condition an assumption on which rests the validity or effect of something else(usually plural) a statement of what is required as part of an agreement a mode of being or form of existence of a person or thing a state at a particular time the state of (good) health (especially in the phrases `in condition' or `in shape' or `out of condition' or `out of shape') information that should be kept in mind when making a decision verb apply conditioner to in order to make smooth and shiny put into a better state establish a conditioned response specify as a condition or requirement in a contract or agreement; make an express demand or provision in an agreementtrain by instruction and practice; especially to teach self-control
  • Conditioning - noun a learning process in which an organism's behavior becomes dependent on the occurrence of a stimulus in its environment
  • Condom - noun contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse
  • Cone - noun any cone-shaped artifact visual receptor cell sensitive to color cone-shaped mass of ovule- or spore-bearing scales or bracts a shape whose base is a circle and whose sides taper up to a point verb make cone-shaped
  • Congenital - adj. present at birth but not necessarily hereditary; acquired during fetal development
  • Congestion - noun excessive crowding excessive accumulation of blood or other fluid in a body part
  • Conjoined twin - noun one of a pair of identical twins born with their bodies joined at some point
  • Conjunctiva - noun a transparent membrane covering the eyeball and under surface of the eyelid
  • Connective tissue - noun tissue of mesodermal origin consisting of e.g. collagen fibroblasts and fatty cells; supports organs and fills spaces between them and forms tendons and ligaments
  • Constipation - noun irregular and infrequent or difficult evacuation of the bowels; can be a symptom of intestinal obstruction or diverticulitis the act of making something futile and useless (as by routine)
  • Consumption - noun the act of consuming something the process of taking food into the body through the mouth (as by eating)(economics) the utilization of economic goods to satisfy needs or in manufacturing involving the lungs with progressive wasting of the body
  • Contact dermatitis - noun a delayed type of allergic reaction of the skin resulting from skin contact with a specific allergen (such as poison ivy)
  • Contagious - adj. easily diffused or spread as from one person to another (of disease) capable of being transmitted by infection
  • IUD - noun contraceptive device consisting of a piece of bent plastic or metal that is inserted through the vagina into the uterus
  • Contraceptive diaphragm - noun a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix
  • Contraceptive pill - noun a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception
  • Contraction - noun the act of decreasing (something) in size or volume or quantity or scope (physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber) a word formed from two or more words by omitting or combining some sounds the process or result of becoming smaller or pressed together
  • Contraindication - noun (medicine) a reason that makes it inadvisable to prescribe a particular drug or employ a particular procedure or treatment
  • Contralateral - adj. on or relating to the opposite side (of the body)
  • Contrast - noun the act of distinguishing by comparing differencesthe range of optical density and tone on a photographic negative or print (or the extent to which adjacent areas on a television screen differ in brightness) the perceptual effect of the juxtaposition of very different colors the opposition or dissimilarity of things that are compared a conceptual separation or distinction verb put in opposition to show or emphasize differences to show differences when compared; be different
  • Control - noun the activity of managing or exerting control over something (physiology) regulation or maintenance of a function or action or reflex etc a mechanism that controls the operation of a machine power to direct or determine the economic policy of controlling or limiting or curbing prices or wages etc. a spiritual agency that is assumed to assist the medium during a seance a relation of constraint of one entity (thing or person or group) by another discipline in personal and social activities great skillfulness and knowledge of some subject or activity a standard against which other conditions can be compared in a scientific experiment the state that exists when one person or group has power over anotherverb verify by using a duplicate register for comparison exercise authoritative control or power over lessen the intensity of; temper; hold in restraint; hold or keep within limits verify or regulate by conducting a parallel experiment or comparing with another standard, of scientific experiments have a firm understanding or knowledge of; be on top of be careful or certain to do something; make certain of something handle and cause to function control (others or oneself) or influence skillfully, usually to one's advantage
  • genetic - adj. of or relating to the science of genetics pertaining to or referring to origin tending to occur among members of a family usually by heredity of or relating to or produced by or being a gene
  • Control - noun the activity of managing or exerting control over something (physiology) regulation or maintenance of a function or action or reflex etc a mechanism that controls the operation of a machine power to direct or determine the economic policy of controlling or limiting or curbing prices or wages etc. a spiritual agency that is assumed to assist the medium during a seance a relation of constraint of one entity (thing or person or group) by another discipline in personal and social activities great skillfulness and knowledge of some subject or activity a standard against which other conditions can be compared in a scientific experiment the state that exists when one person or group has power over anotherverb verify by using a duplicate register for comparison exercise authoritative control or power over lessen the intensity of; temper; hold in restraint; hold or keep within limits verify or regulate by conducting a parallel experiment or comparing with another standard, of scientific experiments have a firm understanding or knowledge of; be on top of be careful or certain to do something; make certain of something handle and cause to function control (others or oneself) or influence skillfully, usually to one's advantage
  • research - noun systematic investigation to establish facts a search for knowledge verb inquire into attempt to find out in a systematically and scientific manner
  • Contusion - noun the action of bruising an injury that doesn't break the skin but results in some discoloration
  • Convulsion - noun a physical disturbance such as an earthquake or upheaval a violent disturbance violent uncontrollable contractions of muscles a sudden uncontrollable attack
  • Coprolalia - noun an uncontrollable use of obscene language; often accompanied by mental disorders
  • Cor pulmonale - noun enlargement of the right ventricle of the heart due to disease of the lungs or of the pulmonary blood vessels
  • Cord - noun a line made of twisted fibers or threads a cut pile fabric with vertical ribs; usually made of cotton a light insulated conductor for household use a unit of amount of wood cut for burning; 128 cubic feet verb bind or tie with a cord stack in cords
  • Corn - noun something sentimental or trite ears of corn grown for human food tall annual cereal grass bearing kernels on large ears: widely cultivated in America in many varieties; the principal cereal in Mexico and Central and South America since pre-Columbian times(Great Britain) any of various cereal plants (especially the dominant crop of the region--wheat in England or oats in Scotland and Ireland) the dried grains or kernels or corn used as animal feed or ground for meal a hard thickening of the skin (especially on the top or sides of the toes) caused by the pressure of ill-fitting shoeswhiskey distilled from a mash of not less than 80 percent corn verbpreserve with salt feed (cattle) with corn
  • Cornea - noun transparent anterior portion of the outer covering of the eye; it covers the lens and iris and is continuous with the sclera
  • Corneal - adj. of or related to the cornea
  • Corneal transplant - noun a surgical procedure in which part or all of a damaged or diseased cornea is replaced by healthy corneal tissue from a donor
  • Coronal - noun flower arrangement consisting of a circular band of foliage or flowers for ornamental purposes
  • Coronary artery bypass graft - noun open-heart surgery in which the rib cage is opened and a section of a blood vessel is grafted from the aorta to the coronary artery to bypass the blocked section of the coronary artery and improve the blood supply to the heart
  • Coronary artery disease - noun a stage of arteriosclerosis involving fatty deposits (atheromas) inside the arterial walls
  • Coronary bypass - noun open-heart surgery in which the rib cage is opened and a section of a blood vessel is grafted from the aorta to the coronary artery to bypass the blocked section of the coronary artery and improve the blood supply to the heart
  • Corporeal - adj. having material or physical form or substanceaffecting or characteristic of the body as opposed to the mind or spirit
  • Corpse - noun the dead body of a human being
  • Corpus - noun the main part of an organ or other bodily structure a collection of writings capital as contrasted with the income derived from it
  • Corpus amygdaloideum - noun an almond-shaped neural structure in the anterior part of the temporal lobe of the cerebrum; intimately connected with the hypothalamus and the hippocampus and the cingulate gyrus; as part of the limbic system it plays an important role in motivation and emotional behavior
  • Cortex - noun the tissue forming the outer layer of an organ or structure in plant or animal the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum
  • Cortical - adj. of or relating to a cortex
  • Corticosteroid - noun a steroid hormone produced by the adrenal cortex or synthesized; administered as drugs they reduce swelling and decrease the body's immune response
  • Cortisol - noun an adrenal-cortex hormone (trade names Hydrocortone or Cortef) that is active in carbohydrate and protein metabolism
  • Cortisone - noun a corticosteroid hormone (trade name Cortone Acetate) normally produced by the adrenal cortex; is converted to hydrocortisone
  • Coryza - noun an inflammation of the mucous membrane lining the nose (usually associated with nasal discharge)
  • Costochondritis - noun inflammation at the junction of a rib and its cartilage
  • Cotton rat - noun destructive long-haired burrowing rat of southern North America and Central America
  • Cough - noun the act of exhaling air suddenly with a noise sudden expulsion of air from the lungs that clears the air passages; a common symptom of upper respiratory infection or bronchitis or pneumonia or tuberculosis verb exhale abruptly, as when one has a chest cold or congestion
  • Courier - noun a person who carries a message
  • Cowper's gland - noun either of two glands that discharge a component of seminal fluid into the urethra; homologous to Bartholin's gland in the female
  • Cowpox - noun a viral disease of cattle causing a mild skin disease affecting the udder; formerly used to inoculate humans against smallpox
  • Cox-1 - noun an enzyme that regulates prostaglandins that are important for the health of the stomach lining and kidneys
  • Cox-2 - noun an enzyme that makes prostaglandins that cause inflammation and pain and fever
  • Coxsackie virus - noun enterovirus causing a disease resembling poliomyelitis but without paralysis
  • Coxsackievirus - noun enterovirus causing a disease resembling poliomyelitis but without paralysis
  • CPR - noun an emergency procedure consisting of external cardiac massage and artificial respiration; the first treatment for a person who has collapsed and has no pulse and has stopped breathing; attempts to restore circulation of the blood and prevent death or brain damage due to lack of oxygen
  • Crabs - noun infestation of the pubic hair by crab lice
  • Crack - adj. of the highest quality noun a usually brief attempt a purified and potent form of cocaine that is smoked rather than snorted a blemish resulting from a break without complete separation of the parts a sudden sharp noise a long narrow opening the act of cracking something a narrow opening witty remark a long narrow depression in a surface a chance to do something verb break into simpler molecules by means of heatreduce (petroleum) to a simpler compound by cracking become fractured; break or crack on the surface only cause to become cracked break partially but keep its integrity tell spontaneously hit forcefully; deal a hard blow, making a cracking noise make a very sharp explosive sound break suddenly and abruptly, as under tension pass through (a barrier) suffer a nervous breakdown make a sharp sound
  • drug - noun a substance that is used as a medicine or narcotic verbadminister a drug to use recreational drugs
  • Cradle cap - noun a dermatitis of the scalp that is common in infants
  • Cranial - adj. of or relating to the cranium which encloses the brain
  • Craniology - noun the scientific study of the skulls of various human races
  • Craniotomy - noun a surgical opening through the skull
  • Cranium - noun the part of the skull that encloses the brain
  • Crapulence - noun the act of drinking alcoholic beverages to excess
  • Crapulent - adj. suffering from excessive eating or drinking
  • Cream - noun toiletry consisting of any of various substances in the form of a thick liquid that have a soothing and moisturizing effect when applied to the skin the part of milk containing the butterfat the best people or things in a group verb add cream to one's coffee, for example put on cream, as on one's face or body beat thoroughly and conclusively in a competition or fight make creamy by beatingremove from the surface
  • Creatine - noun an amino acid that does not occur in proteins but is found in the muscle tissue of vertebrates both in the free form and as phosphocreatine; supplies energy for muscle contraction
  • Cretinism - noun severe hypothyroidism resulting in physical and mental stunting
  • CJD - noun rare (usually fatal) brain disease (usually in middle age) caused by an unidentified slow virus; characterized by progressive dementia and gradual loss of muscle control
  • Crib death - noun sudden and unexpected death of an apparently healthy infant during sleep
  • Crick - noun English biochemist who (with Watson in 1953) helped discover the helical structure of DNA (1916-2004) a painful muscle spasm especially in the neck or back (`rick' and `wrick' are British)verb twist (a body part) into a strained position
  • Cripple - noun someone who is unable to walk normally because of an injury or disability to the legs or back verb deprive of the use of a limb, especially a leg deprive of strength or efficiency; make useless or worthless
  • Crippled - adj. disabled in the feet or legs
  • Crohn's disease - noun a serious chronic and progressive inflammation of the ileum producing frequent bouts of diarrhea with abdominal pain and nausea and fever and weight loss
  • Cross-section - adj. representing a plane made by cutting across something at right angles to its length
  • Crossing over - noun the interchange of sections between pairing homologous chromosomes during the prophase of meiosis
  • Crotch - noun the angle formed by the inner sides of the legs where they join the human trunk external sex organ the region of the angle formed by the junction of two branches
  • Croup - noun a disease of infants and young children; harsh coughing and hoarseness and fever and difficult breathing the part of a quadruped that corresponds to the human buttocks
  • Crown - noun the part of a hat (the vertex) that covers the crown of the head an ornamental jewelled headdress signifying sovereigntya wreath or garland worn on the head to signify victory the center of a cambered road the part of a tooth above the gum that is covered with enamel the Crown (or the reigning monarch) as the symbol of the power and authority of a monarchy the upper branches and leaves of a tree an English coin worth 5 shillings the top of the head the award given to the champion the top point of a mountain or hill verb be the culminating event put an enamel cover on invest with regal power; enthrone form the topmost part of
  • CRP - noun a byproduct of inflammation; a globulin that is found in the blood in some cases of acute inflammation
  • Crutch - noun anything that serves as an expedient a wooden or metal staff that fits under the armpit and reaches to the ground; used by disabled person while walking
  • Cryostat - noun a thermostat that operates at very low temperatures
  • Cryosurgery - noun the use of extreme cold (usually liquid nitrogen) to destroy unwanted tissue (warts or cataracts or skin cancers)
  • Crypt - noun a cellar or vault or underground burial chamber (especially beneath a church)
  • Cryptic - adj. having a puzzling terseness of an obscure naturehaving a secret or hidden meaning
  • Cryptococcosis - noun a fungal infection characterized by nodular lesions--first in the lungs and spreading to the nervous system
  • Cryptography - noun act of writing in code or cipher the science of analyzing and deciphering codes and ciphers and cryptograms
  • Cryptorchidism - noun failure of one or both testes to move into the scrotum as the male fetus develops
  • cerebrospinal fluid - noun clear liquid produced in the ventricles of the brain; fills and protects cavities in the brain and spinal cord
  • CT - noun a method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis a New England state; one of the original 13 colonies
  • Cubital - adj. of or relating to the elbow
  • Cubitus - noun the arm from the elbow to the fingertips hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped
  • Cuboid bone - noun the cube shaped bone on the outer side of the tarsus
  • Cul de sac - noun a street with only one way in or out a passage with access only at one end
  • Culdoscope - noun a specialized endoscope for visually examining a woman's pelvic organs
  • Culdoscopy - noun endoscopic examination of a woman's pelvic organs by the insertion of a culdoscope through the vagina
  • Culture - noun the raising of plants or animals (biology) the growing of microorganisms in a nutrient medium (such as gelatin or agar)the tastes in art and manners that are favored by a social group the attitudes and behavior that are characteristic of a particular social group or organization a particular society at a particular time and place all the knowledge and values shared by a society a highly developed state of perfection; having a flawless or impeccable quality
  • Cupping - noun a treatment in which evacuated cups are applied to the skin to draw blood through the surface
  • Curable - adj. curing or healing is possible capable of being hardened by some additive or other agent
  • Curare - noun a toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated muscles
  • Cure - noun a medicine or therapy that cures disease or relieve pain verb prepare by drying, salting, or chemical processing in order to preserve be or become preserved make (substances) hard and improve their usability provide a cure for, make healthy again
  • Curettage - noun surgery to remove tissue or growths from a bodily cavity (as the uterus) by scraping with a curette
  • Curette - noun a surgical instrument shaped like a scoop to remove tissue from a bodily cavity
  • Curettement - noun surgery to remove tissue or growths from a bodily cavity (as the uterus) by scraping with a curette
  • Curie - noun French chemist (born in Poland) who won two Nobel prizes; one (with her husband and Henri Becquerel) for research on radioactivity and another for her discovery of radium and polonium (1867-1934) French physicist; husband of Marie Curie (1859-1906)a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second
  • Ci - noun a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second
  • Cusp - noun point formed by two intersecting arcs (as from the intrados of a Gothic arch) small elevation on the grinding surface of a tooth a thin triangular flap of a heart valve
  • Cut - adj. with parts removed separated into parts or laid open or penetrated with a sharp edge or instrument (of pages of a book) having the folds of the leaves trimmed or slit fashioned or shaped by cutting mixed with water (used of rates or prices) reduced usually sharply wounded by cutting deeply (of a male animal) having the testicles removed (used of grass or vegetation) cut down with a hand implement or machine made neat and tidy by trimmingnoun an unexcused absence from class the act of reducing the amount or number the act of shortening something by choping off the ends the act of cutting something into parts the act of penetrating or opening open with a sharp edge the division of a deck of cards before dealing (sports) a stroke that puts reverse spin on the ball a trench resembling a furrow that was made by erosion or excavation a canal made by erosion or excavation the style in which a garment is cut a distinct selection of music from a recording or a compact disc (film) an immediate transition from one shot to the next a piece of meat that has been cut from an animal carcassa share of the profits a wound made by cutting a step on some scale in baseball; a batter's attempt to hit a pitched ball a refusal to recognize someone you know the omission that is made when an editorial change shortens a written passage a remark capable of wounding mentally verb grow through the gums have grow through the gums cease, stop have a reducing effect dissolve by breaking down the fat of weed out unwanted or unnecessary things shorten as if by severing the edges or ends of penetrate injuriously fell by sawing; hew reap or harvest hit (a ball) with a spin so that it turns in the opposite direction separate with or as if with an instrumentdivide a deck of cards at random into two parts to make selection difficult make an incision or separation allow incision or separationfunction as a cutting instrument style and tailor in a certain fashionperform or carry out form or shape by cutting or incising form by probing, penetrating, or digging create by duplicating data record a performance on (a medium) make a recording of stop filmingmake an abrupt change of image or sound pass through or acrosspass directly and often in haste move (one's fist) give the appearance or impression of discharge from a group intentionally fail to attend cut off the testicles (of male animals such as horses)cut and assemble the components of lessen the strength or flavor of a solution or mixture reduce in scope while retaining essential elements cut down on; make a reduction in refuse to acknowledgemake out and issue cause to stop operating by disengaging a switch turn sharply; change direction abruptly be able to manage or manage successfully
  • Cutaneous - adj. relating to or existing on or affecting the skin
  • Cutis - noun a natural protective body covering and site of the sense of touch
  • CVA - noun a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain
  • Cyanide - noun an extremely poisonous salt of hydrocyanic acidany of a class of organic compounds containing the cyano radical -CN
  • Cyanosis - noun a bluish discoloration of the skin and mucous membranes; a sign that oxygen in the blood is dangerously diminished (as in carbon monoxide poisoning)
  • Cyclooxygenase - noun either of two related enzymes that control the production of prostaglandins and are blocked by aspirin
  • Cyclooxygenase-1 - noun an enzyme that regulates prostaglandins that are important for the health of the stomach lining and kidneys
  • Cyclooxygenase-2 - noun an enzyme that makes prostaglandins that cause inflammation and pain and fever
  • Cyclopia - noun a developmental abnormality in which there is only one eye
  • Cyclops - noun minute free-swimming freshwater copepod having a large median eye and pear-shaped body and long antennae used in swimming; important in some food chains and as intermediate hosts of parasitic worms that affect man e.g. Guinea worms (Greek mythology) one of a race of giants having a single eye in the middle of their forehead
  • Cyclothymia - noun a mild bipolar disorder that persists over a long time
  • Cyst - noun a closed sac that develops abnormally in some body structure a small anatomically normal sac or bladderlike structure (especially one containing fluid)
  • Cysteine - noun an amino acid containing sulfur that is found in most proteins; oxidizes on exposure to air to form cystine
  • Cystic fibrosis - noun the most common congenital disease; the child's lungs and intestines and pancreas become clogged with thick mucus; caused by defect in a single gene; there is no cure
  • Cystine - noun a crystalline amino acid found in proteins (especially keratin); discovered in bladder stones
  • Cystitis - noun inflammation of the urinary bladder and ureters
  • IC - noun a group of government agencies and organizations that carry out intelligence activities for the United States government; headed by the Director of Central Intelligence
  • Cystocele - noun hernia in which the urinary bladder protrudes through the wall of the vagina; sometimes occurs after childbirth
  • Cytogenetics - noun the branch of biology that studies the cellular aspects of heredity (especially the chromosomes)
  • Cytokine - noun any of various proteins secreted by cells of the immune system that serve to regulate the immune system
  • Cytokinesis - noun organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells
  • Cytology - noun the branch of biology that studies the structure and function of cells
  • Cytomegalovirus - noun any of a group of herpes viruses that enlarge epithelial cells and can cause birth defects; can affect humans with impaired immunological systems
  • CMV - noun any of a group of herpes viruses that enlarge epithelial cells and can cause birth defects; can affect humans with impaired immunological systems
  • Cytoplasm - noun the protoplasm of a cell excluding the nucleus; is full of proteins that control cell metabolism
  • Cytosine - noun a base found in DNA and RNA and derived from pyrimidine; pairs with guanine
  • Cytoskeleton - noun a microscopic network of actin filaments and microtubules in the cytoplasm of many living cells that gives the cell shape and coherence
  • Cytotoxic - adj. of or relating to substances that are toxic to cells

Table of contents:

.A | .B | .C | .D | .E | .F | .G | .H | .I | .J | .K | .L | .M

.N | .O | .P | .Q | .R | .S | .T | .U | .V | .W | .X | .Y | .Z

D

  • D - noun the 4th letter of the Roman alphabet a fat-soluble vitamin that prevents rickets
  • C - noun the 3rd letter of the Roman alphabet (music) the keynote of the scale of C major a general-purpose programing language closely associated with the UNIX operating system street names for cocaine a unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second a degree on the centigrade scale of temperature an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compoundsa base found in DNA and RNA and derived from pyrimidine; pairs with guanine one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose) the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second
  • D - noun the 4th letter of the Roman alphabet a fat-soluble vitamin that prevents rickets
  • domain - noun a knowledge domain that you are interested in or are communicating about territory over which rule or control is exercised the set of values of the independent variable for which a function is defined people in general; especially a distinctive group of people with some shared interest a particular environment or walk of life
  • D and C - noun a surgical procedure usually performed under local anesthesia in which the cervix is dilated and the endometrial lining of the uterus is scraped with a curet; performed to obtain tissue samples or to stop prolonged bleeding or to remove small tumors or to remove fragments of placenta after childbirth or as a method of abortion
  • d - noun the 4th letter of the Roman alphabet a fat-soluble vitamin that prevents rickets
  • D - noun the 4th letter of the Roman alphabet a fat-soluble vitamin that prevents rickets
  • O - noun the blood group whose red cells carry neither the A nor B antigens the 15th letter of the Roman alphabet a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
  • Dacryocyst - noun either of the two dilated ends of the lacrimal ducts at the nasal ends of the eyes that fill with tears secreted by the lacrimal glands
  • Daltonism - noun dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red
  • Dander - noun a feeling of anger and animosity small scales from animal skins or hair or bird feathers that can cause allergic reactions in some people
  • Dandruff - noun loose scales shed from the scalp a condition in which white scales of dead skin are shed by the scalp
  • Dandy fever - noun an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints
  • Data - noun a collection of facts from which conclusions may be drawn
  • Date rape - noun rape in which the rapist is known to the victim (as when they are on a date together)
  • Daughter - noun a female human offspring
  • daw - noun common black-and-grey Eurasian bird noted for thievery
  • DEA - noun federal agency responsible for enforcing laws and regulations governing narcotics and controlled substances; goal is to immobilize drug trafficking organizations
  • Deafness - noun partial or complete loss of hearing
  • Death - noun the act of killing the event of dying or departure from life the personification of death the permanent end of all life functions in an organism or part of an organism the absence of life or state of being dead the time at which life ends; continuing until dead the time when something ends a final state
  • Death rate - noun the ratio of deaths in an area to the population of that area; expressed per 1000 per year
  • DEB - noun a young woman making her debut into society
  • Debridement - noun surgical removal of foreign material and dead tissue from a wound in order to prevent infection and promote healing
  • Decease - noun the event of dying or departure from life verb pass from physical life and lose all bodily attributes and functions necessary to sustain life
  • Decompress - verb restore to its uncompressed form become less tense, rest, or take one's ease decrease the pressure of
  • Decompression - noun relieving pressure restoring compressed information to its normal form for use or display
  • Decongestant - noun a drug that decreases pulmonary congestion
  • Decortication - noun removal of the outer covering of an organ or part
  • Decubitus - noun a reclining position (as in a bed)
  • Decubitus ulcer - noun a chronic ulcer of the skin caused by prolonged pressure on it (as in bedridden patients)
  • Deep - adj. exhibiting great cunning usually with secrecy strong; intense very distant in time or space having great spatial extension or penetration downward or inward from an outer surface or backward or laterally or outward from a center; sometimes used in combination relatively deep or strong; affecting one deeply with head or back bent low large in quantity or size extreme marked by depth of thinking relatively thick from top to bottom extending relatively far inward difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge of an obscure naturehaving or denoting a low vocal or instrumental range (of darkness) very intense adv. to far into space to an advanced time to a great depth noun literary term for an ocean the central and most intense or profound part a long steep-sided depression in the ocean floor
  • Deer mouse - noun brownish New World mouse; most widely distributed member of the genus
  • Defibrillation - noun treatment by stopping fibrillation of heart muscles (usually by electric shock delivered by a defibrillator)
  • Defibrillator - noun an electronic device that administers an electric shock of preset voltage to the heart through the chest wall in an attempt to restore the normal rhythm of the heart during ventricular fibrillation
  • ADA - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • NAD - noun a coenzyme present in most living cells and derived from the B vitamin nicotinic acid; serves as a reductant in various metabolic processes
  • Deformation - noun alteration in the shape or dimensions of an object as a result of the application of stress to it the act of twisting or deforming the shape of something (e.g., yourself) a change for the worse
  • Degenerative arthritis - noun chronic breakdown of cartilage in the joints; the most common form of arthritis occurring usually after middle age
  • Degenerative joint disease - noun chronic breakdown of cartilage in the joints; the most common form of arthritis occurring usually after middle age
  • Dehydration - noun the process of extracting moisture depletion of bodily fluids dryness resulting from the removal of water
  • Deja vu - noun the experience of thinking that a new situation had occurred before
  • Deletion - noun the act of deleting something written or printed the omission that is made when an editorial change shortens a written passage (genetics) the loss or absence of one or more nucleotides from a chromosome any process whereby sounds are left out of spoken words or phrases
  • Delirium - noun a usually brief state of excitement and mental confusion often accompanied by hallucinations state of violent mental agitation
  • Deltoid - adj. of a leaf shape; suggesting a capital delta, with a point at the apex noun a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm
  • Delusion - noun the act of deluding; deception by creating illusory ideas a mistaken or unfounded opinion or idea (psychology) an erroneous belief that is held in the face of evidence to the contrary
  • Demarcation - noun a conceptual separation or distinction the boundary of a specific area
  • Dementia - noun mental deterioration of organic or functional origin
  • Demulcent - adj. having a softening or soothing effect especially to the skin noun a medication (in the form of an oil or salve etc.) that soothes inflamed or injured skin
  • Demyelination - noun loss of the myelin covering of some nerve fibers resulting in their impaired function
  • Dendrite - noun short fiber that conducts toward the cell body of the neuron
  • Dendritic - adj. (neuroscience) of or relating to or resembling a dendrite
  • Dengue - noun an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints
  • Dengue fever - noun an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints
  • ADA - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • orthodontics - noun the branch of dentistry dealing with the prevention or correction of irregularities of the teeth
  • toothache - noun an ache localized in or around a tooth
  • Dentin - noun bone (calcified tissue) surrounding the pulp cavity of a tooth a calcareous material harder and denser than bone that comprises the bulk of a tooth
  • Denture - noun a dental appliance that artificially replaces missing teeth
  • Deoxyribonucleic acid - noun (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
  • Department of Energy - noun the federal department responsible for maintaining a national energy policy of the United States; created in 1977
  • DOE - noun mature female of mammals of which the male is called `buck' the federal department responsible for maintaining a national energy policy of the United States; created in 1977
  • Depigmentation - noun absence or loss of pigmentation (or less than normal pigmentation) in the skin or hair
  • Depression - noun pushing down sad feelings of gloom and inadequacy angular distance below the horizon (especially of a celestial object) a concavity in a surface produced by pressing a mental state characterized by a pessimistic sense of inadequacy and a despondent lack of activity a long-term economic state characterized by unemployment and low prices and low levels of trade and investment a period during the 1930s when there was a worldwide economic depression and mass unemployment a sunken or depressed geological formation a state of depression and anhedonia so severe as to require clinical intervention an air mass of lower pressure; often brings precipitation
  • Dermabrasion - noun removal of scars or tattoos by anesthetizing the skin surface and then sanding or scraping off some of the outer skin layer
  • Dermal - adj. of or relating to or located in the dermis relating to or existing on or affecting the skin of or relating to a cuticle or cuticula
  • dermal - adj. of or relating to or located in the dermis relating to or existing on or affecting the skin of or relating to a cuticle or cuticula
  • Dermatitis - noun inflammation of the skin; skin becomes itchy and may develop blisters
  • Dermatoglyphic - noun the lines that form patterns on the skin (especially on the fingertips and the palms of the hands and the soles of the feet)
  • Dermatoglyphics - noun the study of the whorls and loops and arches in the fingertips and on the palms of the hand and the soles of the feet
  • Dermatologic - adj. of or relating to or practicing dermatology
  • Dermatologist - noun a doctor who specializes in the physiology and pathology of the skin
  • Dermatology - noun the branch of medicine dealing with the skin and its diseases
  • Dermatome - noun a surgical instrument used to cut very thin slices of skin
  • Dermatomyositis - noun myositis characterized by weakness of limb and neck muscles and much muscle pain and selling accompanied by skin rash affecting cheeks and eyelids and neck and chest and limbs; progression and severity vary among individuals
  • Dermatosis - noun disorder involving lesions or eruptions of the skin (in which there is usually no inflammation)
  • Dermis - noun the deep vascular inner layer of the skin
  • DES - noun synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy a potent estrogen used in medicine and in feed for livestock and poultry
  • Descending aorta - noun the descending part of the aorta that branches into the thoracic and abdominal aortae
  • Desiccate - adj. lacking vitality or spirit; lifeless verb lose water or moisture remove water from preserve by removing all water and liquids from
  • Desquamation - noun loss of bits of outer skin by peeling or shedding or coming off in scales
  • Detox - noun the hospital ward or clinic in which patients are detoxified verb treat for alcohol or drug dependence
  • Detoxify - verb remove poison from treat for alcohol or drug dependence
  • Deuteranopia - noun dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red
  • Deuterium - noun an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
  • Development - noun act of improving by expanding or enlarging or refining (music) the section of a composition or movement (especially in sonata form) where the major musical themes are developed and elaborated a recent event that has some relevance for the present situation a district that has been developed to serve some purpose processing a photosensitive material in order to make an image visible a process in which something passes by degrees to a different stage (especially a more advanced or mature stage) a state in which things are improving; the result of developing (as in the early part of a game of chess) the act of making some area of land or water more profitable or productive or useful (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level
  • Deviated septum - noun abnormal displacement of any wall that separates two chambers (usually in the nasal cavity)
  • Dextrocardia - noun abnormal condition where the heart is located toward the right side of the chest
  • Dextrose - noun an isomer of glucose that is found in honey and sweet fruits
  • Dia - noun an intelligence agency of the United States in the Department of Defense; is responsible for providing intelligence in support of military planning and operations and weapons acquisition
  • Diabetes - noun any of several metabolic disorders marked by excessive urination and persistent thirst
  • ADA - noun an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia
  • Diabetes insipidus - noun a rare form of diabetes resulting from a deficiency of vasopressin (the pituitary hormone that regulates the kidneys); characterized by the chronic excretion of large amounts of pale dilute urine which results in dehydration and extreme thirst
  • Diabetes mellitus - noun diabetes caused by a relative or absolute deficiency of insulin and characterized by polyuria
  • Diabetic coma - noun coma that can develop in inadequately treated cases of diabetes mellitus
  • Diachronic - adj. used of the study of a phenomenon (especially language) as it changes through time
  • Diagnosis - noun identifying the nature or cause of some phenomenon
  • Dialysis - noun separation of substances in solution by means of their unequal diffusion through semipermeable membranes
  • Dialysis machine - noun a medical instrument for separating substances in solution by unequal diffusion through semipermeable membranes
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