dihydropyrimidineWiktionary 原文英美构词拆解didi-前缀hydrohydro-前缀pyrimidinepyrimidine词干di-Two. · Double, twice the quantity.hydro-water · liquid词源说明From di- + hydro- + pyrimidine.释义名词noun1(organic chemistry) A heterocycle formed from pyrimidine by the addition of two hydrogen atoms across a double bond同族词派生词 2dihydropyrimidinase·dihydropyrimidine dehydrogenase