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.
Composition of surfactant The exact composition of the surfactant in vivo is not known but most of the studies are done using the endotracheal lavage fluid and in vitro lung preparations. Based on these studies, it has been demonstrated that surfactant is mainly composed of 90% lipids and 10% proteins.