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[sahy-tos-tuh-rawl, -rol] /saɪˈtɒs təˌrɔl, -ˌrɒl/
noun, Chemistry.
any of five steroid alcohols having the formula C 2 2 H 5 0 O, especially the beta form, obtained from various plant sources: used in organic synthesis.
Origin of sitosterol
First recorded in 1915-20; sito- + sterol Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for sitosterol


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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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sitosterol in Medicine

sitosterol si·tos·ter·ol (sī-tŏs'tə-rôl', -rōl', sĭ-)
Any of a group of sterols that occur in high concentrations in certain plants, such as yams, and are used in the synthesis of steroid hormones.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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