secbutabarbitalWiktionary 原文构词拆分sec-前缀(organic chemistry) secondary-form of a functional group, a branched functional group+butyl词根/词干+barbital词根/词干词源说明From sec- + buta(nyl) + barbital.释义（英文）名词 Noun(pharmacology) A synthetic barbiturate used especially in the form of its sodium salt C10H15N2NaO3 as a sedative and sleep aid.词族派生词（1）thiobutabarbital