胞嘧啶 bāomìdìng cytosine Definitions Defs Origin Strokes Stroke Words Sentences Sents 胞 bāo noun [womb/placenta] (bound form) the placenta or fetal membranes; the womb嘧啶 mìdìng pyrimidine A heterocyclic organic compound containing nitrogen; a colorless crystal with a pungent odor used to manufacture medicines
