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 (ûr-gŏs′tə-rôl′, -rōl′)
A crystalline sterol, C28H43OH, synthesized by yeast from sugars or derived from ergot and converted to vitamin D2 when exposed to ultraviolet radiation.


(Botany) a plant sterol that is converted into vitamin D by the action of ultraviolet radiation. Formula: C28H43OH


(ɜrˈgɒs təˌroʊl, -rɔl)

a colorless, crystalline, water-insoluble sterol, C28H43OH, that occurs in ergot and yeast and that, when irradiated with ultraviolet light, is converted to vitamin D.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ergosterol - a plant sterol that is converted into vitamin D by ultraviolet radiation
steroid alcohol, sterol - any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances
calciferol, cholecalciferol, D, ergocalciferol, viosterol, vitamin D - a fat-soluble vitamin that prevents rickets
References in periodicals archive ?
The GL extracts used were prepared from the fruiting body with methanol and contained mainly polysaccharides and ergosterin.