A-Z list of medicines A

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  • 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
  • abb   noun an urban hit squad and guerrilla group of the Communist Party in the Philippines; formed in the 1980s
  • abc   noun the elementary stages of any subject (usually plural)
  • abelmoschus   noun genus of tropical coarse herbs having large lobed leaves and often yellow flowers
  • acacia   noun any of various spiny trees or shrubs of the genus Acacia
  • academy   noun a learned establishment for the advancement of knowledge* ; a school for special training* ; a secondary school (usually private)* ; an institution for the advancement of art or science or literature
  • acetaldehyde   noun a colorless volatile water soluble liquid aldehyde used chiefly in manufacture of acetic acid and perfumes and drugs
  • 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)
  • acetic acid   noun a colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals
  • achy   adj. causing a dull and steady pain
  • aconite   noun any of various usually poisonous plants of the genus Aconitum having tuberous roots and palmately lobed leaves and blue or white flowers
  • aconitum   noun genus of poisonous plants of temperate regions of northern hemisphere with a vaulted and enlarged petal
  • aconitum lycoctonum   noun poisonous Eurasian perennial herb with broad rounded leaves and yellow flowers and fibrous rootstock
  • aconitum napellus   noun a poisonous herb native to northern Europe having hooded blue purple flowers; the dried leaves and roots yield aconite
  • activase   noun a thrombolytic agent (trade name Activase) that causes fibrinolysis at the site of a blood clot; used in treating acute myocardial infarction
  • 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
  • acular   noun nonsteroidal anti inflammatory drug (trade names Acular and Toradol) that is administered only intramuscularly
  • acyclovir   noun an oral antiviral drug (trade name Zovirax) used to treat genital herpes; does not cure the disease but relieves the symptoms
  • 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 of* ;make an addition by combining numbers* ; state or say further* ;constitute an addition* ; determine the sum of* ; bestow a quality on
  • 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
  • adrenal   adj. of or pertaining to the adrenal glands or their secretions* ; near the kidneys* ; noun either of a pair of complex endocrine glands situated near the kidney
  • adrenalin   noun a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
  • adrenocorticotrophin   noun a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex
  • adult   adj. (of animals) fully developed* ; noun any mature animal* ; a fully developed person from maturity onward
  • advanced   adj. (of societies) highly developed especially in technology or industry* ; far along in time* ; comparatively late in a course of development* ; ahead in development; complex or intricate* ;at a higher level in training or knowledge or skill* ; farther along in physical or mental development* ; ahead of the times* ; situated ahead or going before
  • advantage   noun benefit resulting from some event or action* ; the quality of having a superior or more favorable position* ; (tennis) first point scored after deuce* ; verb give an advantage to
  • advil   noun a nonsteroidal anti inflammatory medicine (trade names Advil and Motrin and Nuprin) used to relieve the pain of arthritis and as an analgesic and antipyretic
  • aesculus   noun deciduous trees or some shrubs of North America; southeastern Europe; eastern Asia
  • aesculus hippocastanum   noun tree having palmate leaves and large clusters of white to red flowers followed by brown shiny inedible seeds
  • agaricus campestris   noun common edible mushroom found naturally in moist open soil; the cultivated mushroom of commerce
  • agave americana   noun widely cultivated American monocarpic plant with greenish white flowers on a tall stalk; blooms only after ten to twenty years and then dies
  • ailanthus   noun any of several deciduous Asian trees of the genus Ailanthus
  • aim   noun the action of directing something at an object* ; the goal intended to be attained (and which is believed to be attainable)* ; an anticipated outcome that is intended or that guides your planned actions* ; the direction or path along which something moves or along which it lies* ; verb propose or intend* ; direct (a remark) toward an intended goal* ; aim or direct at; as of blows, weapons, or objects such as photographic equipment* ; have an ambitious plan or a lofty goal* ; specifically design a product, event, or activity for a certain public* ; move into a desired direction of discourse* ; intend (something) to move towards a certain goal
  • air   adj. relating to or characteristic of or occurring in the air* ; noun a distinctive but intangible quality surrounding a person or thing* ;medium 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
  • air power   noun the aggregation of a country's military aircraft
  • akin   adj. related by blood* ; similar or related in quality or character
  • albumin   noun a simple water soluble protein found in many animal tissues and liquids
  • albuterol   noun a bronchodilator (trade names Ventolin or Proventil) used for asthma and emphysema and other lung conditions; available in oral or inhalant forms; side effects are tachycardia and shakiness
  • 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
  • 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
  • aldactone   noun a synthetic corticosteroid (trade name Aldactone) used to treat hypertension
  • alder   noun north temperate shrubs or trees having toothed leaves and conelike fruit; bark is used in tanning and dyeing and the wood is rot resistant* ; wood of any of various alder trees; resistant to underwater rot; used for bridges etc
  • alendronate   noun a tablet (trade name Fosamax) prescribed to prevent or treat osteoporosis in women after menopause
  • alert   adj. very attentive or observant* ; (usually followed by `to') showing acute awareness; mentally perceptive* ; not unconscious; especially having become conscious* ; mentally responsive* ; noun a warning serves to make you more alert to danger* ; condition of heightened watchfulness or preparation for action* ; an automatic signal (usually a sound) warning of danger* ; verb warn or arouse to a sense of danger or call to a state of preparedness
  • aletris farinosa   noun colicroot having a scurfy or granuliferous perianth and white flowers; southeastern United States
  • aleve   noun a nonsteroidal anti inflammatory drug (trademarks Aleve and Anaprox and Aflaxen)
  • alfalfa   noun leguminous plant grown for hay or forage* ; important European leguminous forage plant with trifoliate leaves and blue violet flowers grown widely as a pasture and hay crop
  • alka seltzer   noun a commercial antacid; tablets dissolve in water to give an effervescent solution
  • alkeran   noun antineoplastic drug (trade name Alkeran) used to treat multiple myeloma and some other malignancies
  • allergen   noun any substance that can cause an allergy
  • allergy   noun hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
  • alleviate   verb provide physical relief, as from pain* ; make easier
  • allium   noun large genus of perennial and biennial pungent bulbous plants: garlic; leek; onion; chive; sometimes placed in family Alliaceae as the type genus
  • allium cepa   noun bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb
  • allium sativum   noun bulbous herb of southern Europe widely naturalized; bulb breaks up into separate strong flavored cloves
  • allopurinol   noun a drug (trade name Zyloprim) used to treat gout and other conditions in which there is an excessive buildup of uric acid
  • alloy   noun a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten* ; the state of impairing the quality or reducing the value of something* ; verb make an alloy of* ;lower in value by increasing the base metal content
  • allspice   noun ground dried berrylike fruit of a West Indian allspice tree; suggesting combined flavors of cinnamon and nutmeg and cloves* ; deciduous shrubs having aromatic bark; eastern China; southwestern and eastern United States* ; aromatic West Indian tree that produces allspice berries
  • almond   noun oval shaped edible seed of the almond tree* ; small bushy deciduous tree native to Asia and North Africa having pretty pink blossoms and highly prized edible nuts enclosed in a hard green hull; cultivated in southern Australia and California
  • alnus glutinosa   noun medium sized tree with brown black bark and woody fruiting catkins; leaves are hairy beneath
  • aloe   noun succulent plants having rosettes of leaves usually with fiber like hemp and spikes of showy flowers; found chiefly in Africa
  • alprazolam   noun an antianxiety agent (trade name Xanax) of the benzodiazepine class
  • alstonia scholaris   noun evergreen tree of eastern Asia and Philippines having large leathery leaves and small green white flowers in compact cymes; bark formerly used medicinally
  • alumina   noun any of various forms of aluminum oxide occurring naturally as corundum
  • ambrosia artemisiifolia   noun annual weed with finely divided foliage and spikes of green flowers; common in North America; introduced elsewhere accidentally
  • american   adj. of or relating to or characteristic of the continents and islands of the Americas* ; of or relating to the United States of America or its people or language or culture* ; noun a native or inhabitant of a North American or Central American or South American country* ; a native or inhabitant of the United States* ; the English language as used in the United States
  • american beech   noun North American forest tree with light green leaves and edible nuts
  • american cockroach   noun large reddish brown free flying cockroach originally from southern United States but now widely distributed
  • american elm   noun large ornamental tree with graceful gradually spreading branches common in eastern North America
  • american sycamore   noun very large spreading plane tree of eastern and central North America to Mexico
  • amethyst   adj. of a moderate purple color* ; noun a transparent purple variety of quartz; used as a gemstone
  • amino acid   noun organic compounds containing an amino group and a carboxylic acid group
  • aminophylline   noun a theophylline derivative that is used as a bronchodilator in the treatment of bronchial asthma, emphysema, and bronchitis
  • amitriptyline hydrochloride   noun a tricyclic antidepressant drug (trade name Elavil) with serious side effects; interacts with many other medications
  • amlodipine besylate   noun a vasodilator (trade name Norvasc) taken in tablet form; prescribed for hypertension and angina pectoris
  • ammonia   noun a pungent gas compounded of nitrogen and hydrogen (NH3)* ; a water solution of ammonia
  • amoeba   noun naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion
  • amoxicillin   noun an antibiotic; a semisynthetic oral penicillin (trade names Amoxil and Larotid and Polymox and Trimox and Augmentin) used to treat bacterial infections
  • amoxil   noun an antibiotic; a semisynthetic oral penicillin (trade names Amoxil and Larotid and Polymox and Trimox and Augmentin) used to treat bacterial infections
  • amphetamine sulfate   noun a sulfate derivative of amphetamine that is used as a stimulant for the central nervous system
  • ampicillin   noun semisynthetic penicillin (trade names Principen and Polycillin and SK Ampicillin)
  • anacardium   noun type genus of the Anacardiaceae: cashew
  • anacardium occidentale   noun tropical American evergreen tree bearing kidney shaped nuts that are edible only when roasted
  • anagallis arvensis   noun herb with scarlet or white or purple blossoms that close at approach of rainy weather
  • analgesic   adj. capable of relieving pain* ; noun a medicine used to relieve pain
  • anaprox   noun a nonsteroidal anti inflammatory drug (trademarks Aleve and Anaprox and Aflaxen)
  • anesthetic   adj. characterized by insensibility* ; noun a drug that causes temporary loss of bodily sensations
  • anew   adv. again but in a new or different way
  • angelica archangelica   noun a biennial cultivated herb; its stems are candied and eaten and its roots are used medicinally
  • anger   noun a strong emotion; a feeling that is oriented toward some real or supposed grievance* ; the state of being angry* ;belligerence aroused by a real or supposed wrong (personified as one of the deadly sins)* ; verb make angry* ; become angry
  • anhydrous   adj. without water; especially without water of crystallization
  • anorectal   adj. pertaining to the anus and rectum considered together
  • ans   noun the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands
  • 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
  • antabuse   noun a drug (trade name Antabuse) used in the treatment of alcoholism; causes nausea and vomiting if alcohol is ingested
  • antacid   adj. acting to neutralize acid (especially in the stomach)* ;noun an agent that counteracts or neutralizes acidity (especially in the stomach)
  • anthemis nobilis   noun Eurasian plant apple scented foliage and white rayed flowers and feathery leaves used medicinally; in some classification systems placed in genus Anthemis
  • antibacterial   adj. destroying bacteria or inhibiting their growth* ;noun 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
  • antiemetic   noun a drug that prevents or alleviates nausea and vomiting
  • antifungal   adj. capable of destroying fungi* ; noun any agent that destroys or prevents the growth of fungi
  • 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
  • antiperspirant   noun an astringent substance applied to the skin to reduce perspiration
  • antiseptic   adj. (extended sense) of exceptionally clean language* ;clean 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
  • antivenin   noun an antitoxin that counteracts the effects of venom from the bite of a snake or insect or other animal
  • 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
  • anxious   adj. eagerly desirous* ; causing or fraught with or showing anxiety
  • apathy   noun the trait of lacking enthusiasm for or interest in things generally* ; an absence of emotion or enthusiasm
  • apis   noun type genus of the Apidae: honeybees
  • apis mellifera   noun social bee often domesticated for the honey it produces
  • apocynum androsaemifolium   noun North American perennial having pinkish flowers in loose cymes; used in folk medicine for pain or inflammation in joints
  • apocynum cannabinum   noun Canadian dogbane yielding a tough fiber used as cordage by native Americans; used in folk medicine for pain or inflammation in joints
  • applause   noun a demonstration of approval by clapping the hands together
  • apple   noun fruit with red or yellow or green skin and sweet to tart crisp whitish flesh* ; native Eurasian tree widely cultivated in many varieties for its firm rounded edible fruits
  • apricot   noun downy yellow to rosy colored fruit resembling a small peach* ; Asian tree having clusters of usually white blossoms and edible fruit resembling the peach* ; a shade of pink tinged with yellow
  • aquavit   noun Scandinavian liquor usually flavored with caraway seeds
  • aquilegia vulgaris   noun common European columbine having variously colored (white or blue to purple or red) short spurred flowers; naturalized in United States
  • aralia racemosa   noun unarmed woody rhizomatous perennial plant distinguished from wild sarsaparilla by more aromatic roots and panicled umbels; southeastern North America to Mexico
  • arava   noun an anti TNF compound (trade name Arava) that is given orally; can slow the progression of rheumatoid arthritis by slowing the proliferation of white blood cells which reduces inflammation in the synovium
  • argemone mexicana   noun annual herb with prickly stems and large yellow flowers; southern United States to West Indies and Mexico
  • aristolochia clematitis   noun creeping plant having curving flowers thought to resemble fetuses; native to Europe; naturalized Great Britain and eastern North America
  • arizona ash   noun small shrubby ash of southwestern United States and northwestern Mexico
  • arnica   noun an ointment used in treating bruises* ; any of various rhizomatous usually perennial plants of the genus Arnica* ; used especially in treating bruises
  • arnica montana   noun herb of pasture and open woodland throughout most of Europe and western Asia having orange yellow daisylike flower heads that when dried are used as a stimulant and to treat bruises and swellings
  • arroyo willow   noun shrubby willow of the western United States
  • arsenic trioxide   noun a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer
  • artemisia vulgaris   noun European tufted aromatic perennial herb having hairy red or purple stems and dark green leaves downy white below and red brown florets
  • artery   noun a major thoroughfare that bears important traffic* ; a blood vessel that carries blood from the heart to the body
  • arthritis   noun inflammation of a joint or joints
  • artichoke   noun a thistlelike flower head with edible fleshy leaves and heart* ; Mediterranean thistlelike plant widely cultivated for its large edible flower head
  • arum maculatum   noun common European arum with lanceolate spathe and short purple spadix; emerges in early spring; source of a starch called arum
  • as   adv. to the same degree (often followed by `as')* ; noun a United States territory on the eastern part of the island of Samoa* ; 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
  • asafoetida   noun the brownish gum resin of various plants; has strong taste and odor; formerly used as an antispasmodic
  • asclepias tuberosa   noun erect perennial of eastern and southern United States having showy orange flowers
  • ascorbic acid   noun a vitamin found in fresh fruits (especially citrus fruits) and vegetables; prevents scurvy
  • 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
  • asparagus   noun edible young shoots of the asparagus plant* ; plant whose succulent young shoots are cooked and eaten as a vegetable
  • aspartame   noun an artificial sweetener made from aspartic acid; used as a calorie free sweetener
  • aspen   noun any of several trees of the genus Populus having leaves on flattened stalks so that they flutter in the lightest wind
  • aspergillus   noun genus of common molds causing food spoilage and some pathogenic to plants and animals
  • 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
  • ass kisser   noun someone who humbles himself as a sign of respect; who behaves as if he had no self respect
  • asthma   noun respiratory disorder characterized by wheezing; usually of allergic origin
  • astringent   adj. tending to draw together or constrict soft organic tissue* ; sour or bitter in taste* ; noun a drug that causes contraction of body tissues and canals
  • atenolol   noun an oral beta blocker (trade name Tenormin) used in treating hypertension and angina; has adverse side effects (depression and exacerbation of congestive heart failure etc.)
  • ativan   noun tranquilizer (trade name Ativan) used to treat anxiety and tension and insomnia
  • atlantic cod   noun one of the world's most important commercial fishes
  • 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
  • atrovent   noun an inhaled bronchodilator (trade name Atrovent)
  • attention span   noun the length of time you can concentrate on some idea or activity
  • attitude   noun a theatrical pose created for effect* ; a complex mental state involving beliefs and feelings and values and dispositions to act in certain ways* ; position of aircraft or spacecraft relative to a frame of reference (the horizon or direction of motion)* ;the arrangement of the body and its limbs
  • augmentin   noun an antibiotic; a semisynthetic oral penicillin (trade names Amoxil and Larotid and Polymox and Trimox and Augmentin) used to treat bacterial infections
  • aurora   noun (Roman mythology) goddess of the dawn; counterpart of Greek Eos* ; an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force* ; the first light of day
  • australian pine   noun common Australian tree widely grown as an ornamental in tropical regions; yields heavy hard red wood
  • austrian   adj. of or relating to Austria or its people or culture* ; nouna native or inhabitant of Austria
  • avena sativa   noun widely cultivated in temperate regions for its edible grains
  • avocado   adj. of the dull yellowish green of the meat of an avocado* ; noun a pear shaped tropical fruit with green or blackish skin and rich yellowish pulp enclosing a single large seed* ; tropical American tree bearing large pulpy green fruits
  • avon   noun a county in southwestern England* ; a river in central England that flows through Stratford on Avon and empties into the Severn* ; a river in southwestern England rising in Gloucestershire and flowing through Bristol to empty into the estuary of the Severn
  • awake   adj. not in a state of sleep; completely conscious* ; (usually followed by `to') showing acute awareness; mentally perceptive* ; not unconscious; especially having become conscious* ; verb stop sleeping
  • awaken   verb cause to become awake or conscious* ; make aware* ;stop sleeping
  • axe   noun an edge tool with a heavy bladed head mounted across a handle* ; verb chop or split with an ax* ; terminate
  • azactam   noun an antibiotic (trade name Azactam) used against severe infections; has minimal side effects
  • azadirachta indica   noun large semi evergreen tree of the East Indies; trunk exudes a tenacious gum; bitter bark used as a tonic; seeds yield an aromatic oil; sometimes placed in genus Melia
  • azathioprine   noun an immunosuppressive drug (trade name Imuran) used to prevent rejection of a transplanted organ
  • azo   adj. relating to or containing the azo radical
  • aztreonam   noun an antibiotic (trade name Azactam) used against severe infections; has minimal side effects

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