尿嘧啶 niàomìdìng uracil Definitions Defs Origin Strokes Stroke Words Sentences Sents 尿 niào noun urine urine; the liquid waste filtered from the body by the kidneys嘧啶 mìdìng pyrimidine A heterocyclic organic compound containing nitrogen; a colorless crystal with a pungent odor used to manufacture medicines
