pyrimidineWiktionary 原文/paɪˈrɪ.mɪˌdiːn/词源链德语GermanPyrimidin↓ 借入英语Englishpyrimidine词源说明First attested in 1885. From German Pyrimidin, from German Pyridin (“pyridine”), with the insertion of -mi- from amidine.释义名词noun1(organic chemistry) A diazine in which the two nitrogen atoms are in the meta- positions; it is the basis of three of the bases found in DNA and RNA: thymine, uracil and cytosine同族词派生词 30