Read Edit View history 嘧啶 mìdìng pyrimidine Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 嘧啶 mìdìng pyrimidine noun · pyrimidine C4H4N2 嘧啶和嘌呤是构成核酸的主要碱基。 Edit Delete References Add reference No references for this word.