1234567891011121314Keywordas in pyrimidinein chemistry-mi as in pyramidineFrequency#5147Strokes14ReadingsmìMnemonic口 (mouth) gives the meaning and 密 the sound.Stroke orderComposed of口mouth密denseUsed in vocabulary嘧啶mìdìngpyrimidine C4H4N2胞嘧啶bāomìdìngcytosine nucleotide (C, pairs with guanine G 鸟嘌呤 in DNA and RNA)嘧mì(phonetic) as in pyrimidine尿嘧啶niàomìdìnguracil nucleotide (U, pairs with adenine A 腺嘌呤 in RNA)