norfenefrineWiktionary 原文英美构词拆解nor-前缀+phenylephrine词干nor-(organic chemistry) A compound derived from another by removal of a radical, especially by removal of methyl or methylene.词源说明From nor- + phen(yl)ephrine.释义名词noun1(biochemistry, pharmacology) An adrenergic agent used as a sympathomimetic drug.