a crystalline plant sterol, CHOH, formerly prepared from ergot but now chiefly from yeast: when exposed to ultraviolet rays it produces a vitamin (D) used to prevent or cure rickets
Origin of ergosterolfrom ergot + sterol
A crystalline sterol, C28H43OH, synthesized by yeast from sugars or derived from ergot and converted to vitamin D2 when exposed to ultraviolet radiation.
Origin of ergosterolergo(t) sterol
(countable and uncountable, plural ergosterols)
ergo- + sterol