thiobarbitalWiktionary 原文构词拆分thio-前缀(chemistry) containing sulfur, especially a compound in which oxygen has been replaced by this element+barbital词根/词干词源说明From thio- + barbital.释义（英文）名词 Noun(organic chemistry) The barbiturate 5,5-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione