thioformaldehydeWiktionary 原文英美构词拆解thiothio-前缀formaldehydeformaldehyde词干thio-(chemistry) containing sulfur, especially a compound in which oxygen has been replaced by this element词源说明From thio- + formaldehyde.释义名词noun1(organic chemistry, uncountable) The simplest thioaldehyde H-CHS.2(organic chemistry, in the plural) Any oligomer of this compound.