er·gos·ter·ol /(ˌ)ɝˈgɑstəˌrɔl, ˌrol/ 麥角固醇; 麥角甾醇
er·gos·ter·ol /(ˌ)ɝˈgɑstəˌrɔl, ˌrol/ 名詞
ergosterol n : a plant sterol that is converted into vitamin D by ultraviolet radiation