cresylWiktionary 原文英美构词拆解crescresol词干yl-yl后缀-yl(organic chemistry) A univalent radical or functional group formed from a given molecule. Thus propyl from propane, benzyl from benzene, and so forth.词源说明From cresol + -yl.释义名词noun1(organic chemistry, especially in combination) Any of three isomeric univalent radical derived from a cresol; tolyl同族词派生词 2tricresyl·cresylic