Meaning of SURFACTANT

Pronunciation:			sur'faktunt
WordNet Dictionary
	Definition:		[n]  a substance capable of reducing the surface tension of a liquid in which it is dissolved
	Websites:
	Synonyms:		surface-active agent, wetter, wetting agent
	See Also:		chemical agent, detergent, emulsifier
Medical Dictionary
	Definition:		A substance lining the air sacs in the lungs which enhances expansion of the lungs during inspiration.
Biology Dictionary
	Definition:		A substance which changes the nature of a surface, including water surface tension. Surfactants are used as detergents, emulsifiers, penetrants, and wetting agents. Any substance that lowers the surface tension of a liquid.