a white powder or waxy white solid extracted from soya beans, consisting of a mixture of isomers of the formula C29H50O with other sterols: used in cosmetics and medicine
Word origin
C20: from Greek sitos food, grain + sterol
sitosterol in American English
(saɪˈtɑstəˌrɔl; saɪˈtɑstəˌroʊl)
noun
any of a group of crystalline alcoholic sterols resembling cholesterol in their properties