Porous
Porous
Porous (/ˈpɔːrəs/), derived from the Latin word "porus" meaning "passage", refers to a material or substance with tiny holes, often microscopic, that allow the passage of air, liquid, or other substances.
Etymology
The term "porous" originates from the Latin word "porus", which translates to "passage". This is in reference to the tiny holes or passages that characterize porous materials.
Definition
A porous material or porous substance is a material that contains pores (holes), voids, or interstices. These are often microscopic and allow the passage of substances such as air, water, or other fluids. Porous materials include things like sponge, cork, and certain types of rock and soil.
Related Terms
- Permeability: The measure of a material's ability to transmit fluids.
- Percolation: The process of a liquid slowly passing through a filter.
- Adsorption: The adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved solid to a surface.
- Capillary action: The ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity.
See Also
External links
- Medical encyclopedia article on Porous
- Wikipedia's article - Porous
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