Function Keys are also heavily used in the BIOS interface. Generally during the power-on self-test, BIOS access can be gained by hitting either a function key or the delete key. In the BIOS keys can have different purposes depending on the BIOS.
Freebase(0.00 / 0 votes)Rate this definition: Surfactant. Surfactants are compounds that lower the surface tension of a liquid, the interfacial tension between two liquids, or that between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants.
Surfactants are generally classified by their ionic (electrical charge) properties in water. Anionic surfactants are used in laundry and hand dishwashing detergents; household cleaners; and personal cleansing products.