胎盘形成 tāipánxíngchéng placentation Origin Definitions Defs Strokes Stroke Words Sentences Sents 胎盘 胎盤 tāipán noun placenta the organ in the uterus of a pregnant mammal that provides nourishment to the fetus and is connected via the umbilical cord形成 xíngchéng verb to form to take shape; to come into being through a process of development or change