ethinylWiktionary 原文英美构词拆解ethinethine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 ethine + -yl.释义名词noun1Alternative form of ethynyl.同族词派生词 1ethinylestradiol