胞嘧啶 bāo mì dìng 🔊 cytosine nucleotide (C, pairs with… + Keep this word Meanings bāo mì dìng cytosine nucleotide (C, pairs with guanine G 鳥嘌呤|鸟嘌呤 in DNA and RNA) Its characters 胞bāoplacenta嘧mìas in pyrimidine啶dìngidine (chemistry)