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ergosterol

[ ur-gos-tuh-rohl, -rawl ]

noun

, Biochemistry.
  1. a colorless, crystalline, water-insoluble sterol, C 28 H 43 OH, that occurs in ergot and yeast and that, when irradiated with ultraviolet light, is converted to vitamin D.

ergosterol

/ ɜːˈɡɒstəˌrɒl /

noun

  1. a plant sterol that is converted into vitamin D by the action of ultraviolet radiation. Formula: C 28 H 43 OH
“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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Word History and Origins

Origin of ergosterol1

First recorded in 1885–90; ergo- 2 + sterol

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