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 ergosterol; from 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