pseudoephedrineWiktionary 原文英/sjuː.dəʊˈɛf.ə.driːn/美/su.doʊ.ɪˈfɛ.drɪn/构词拆解pseudopseudo-前缀ephedrineephedrine词干pseudo-False; not genuine; fake. · (proscribed) Quasi-; almost.释义名词noun1(pharmacology) A sympathomimetic alkaloid commonly used as a decongestant; a chemical compound, an isomer of ephedrine, with the formula C10H15NO.