oxobutanoateWiktionary 原文英美构词拆解oxooxo-前缀butanoatebutanoate词干oxo-(chemistry) Oxygen. · (organic chemistry) Having a methylene group replaced by a carbonyl group.词源说明From oxo- + butanoate.释义名词noun1(organic chemistry) Any derivative of a butanoate in which a methylene group has been replaced by a carbonyl group