thioanhydrideWiktionary 原文英美构词拆解thiothio-前缀anhydrideanhydride词干thio-(chemistry) containing sulfur, especially a compound in which oxygen has been replaced by this element词源说明From thio- + anhydride.释义名词noun1(chemistry) any analogue of an acid anhydride, or general formula (RC(=O))2S, in which one oxygen has been replaced by sulfur