pentaerythritolWiktionary 原文英美构词拆解pentapenta-前缀erythritolerythritol词干penta-Five.词源说明From penta- + erythritol.释义名词noun1(organic chemistry) The polyhydric alcohol 2,2-bis(hydroxymethyl)1,3-propanediol C(CH2OH)4同族词派生词 1pentaerythrityl