norpethidineWiktionary 原文英美构词拆解nornor-前缀pethidinepethidine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- + pethidine.释义名词noun1A 4-phenylpiperidine derivative that is both a metabolite of and a precursor to pethidine.