placenta
英 [plə'sentə]
美[plə'sɛntə]
- n. [胚] 胎盘；[植] 胎座
英英释意
- 1. that part of the ovary of a flowering plant where the ovules form
- 2. the vascular structure in the uterus of most mammals providing oxygen and nutrients for and transferring wastes from the developing fetus