lecithin

lec·i·thin

noun \ˈle-sə-thən\

Definition of LECITHIN

: any of several waxy hygroscopic phospholipids that are widely distributed in animals and plants, form colloidal solutions in water, and have emulsifying, wetting, and antioxidant properties; also : a mixture of or substance rich in lecithins

Origin of LECITHIN

International Scientific Vocabulary, from Greek lekithos yolk of an egg

First Known Use: 1861

lec·i·thin

noun \ˈles-ə-thən\   (Medical Dictionary)

Medical Definition of LECITHIN

: any of several waxy hygroscopic phospholipids in which phosphatidic acid has formed an ester with choline and which are widely distributed in animals and plants, form colloidal solutions in water, and have emulsifying, wetting, and antioxidant properties; also : a mixture of or a substance rich in lecithins—called also phosphatidylcholine

lecithin

noun    (Concise Encyclopedia)

Any of a class of phospholipids (also called phosphatidyl cholines) important in cell structure and metabolism. They are composed of phosphate, choline, glycerol (as the ester), and two fatty acids. Various fatty acids pairs distinguish the various lecithins. Commercial lecithin, a wetting and emulsifying agent used in animal feeds, baking products and mixes, chocolate, cosmetics and soap, insecticides, paint, and plastics, is a mixture of lecithins and other phospholipids in an edible oil.