尿嘧啶 Traditional form: 尿嘧啶 Pinyin (reading): niàomìdìng Definitions: uracil nucleotide (U, pairs with adenine A 腺嘌呤 in RNA) Characters: 尿 - urine; to urinate 嘧 - in chemistry, -mi as in pyramidine 啶 - in chemistry, -dine Traditional characters: 尿 - urine; to urinate 嘧 - in chemistry, -mi as in pyramidine 啶 - in chemistry, -dine