pyrimidine
/ˌpaɪˈrɪmɪdiːn/noun
mass noun
1- Chemistry a colourless crystalline compound with basic properties【化】嘧啶, 间二氮（杂）苯。
1.1
- A heteroaromatic compound; chem. formula: C4H4N2.芳香杂环化合物; 化学分子式： C4H4N2.
1.2
- （亦作pyrimidine base）[count noun] a substituted derivative of this, especially the bases thymine and cytosine present in DNA嘧啶碱基。
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