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Any of various compounds composed of fatty acids and phosphoric acid and a nitrogenous base; an important constituent of membranes.phospholipid

(Science: biochemistry) The major structural lipid of most cellular membranes (except the chloroplast which has galactolipids). Contain phosphate, usually as a diester.

Examples include phosphatidyl phospholipids, plasmalogens and sphingomyelins. A type of [[fat molecule consisting of 2 [[fatty acids, a [[phosphate and a [[glycerol molecule.