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.
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

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.


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  • Sitotropism

    sitotropism si·tot·ro·pism (sī-tŏt’rə-pĭz’əm) n. The turning of living cells toward or away from a food source. Also called sitotaxis.

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