English Dictionary

placenta

/pləˈsɛntə/

noun

(anatomy) An organ in most mammals during gestation that supplies food and oxygen to the foetus and passes back waste. It is on wall of the uterus and links to the foetus through the umbilical cord. It is expelled after birth.

The placenta is an organ that develops in the uterus during pregnancy.

意味（1）

(anatomy) An organ in most mammals during gestation that supplies food and oxygen to the foetus and passes back waste. It is on wall of the uterus and links to the foetus through the umbilical cord. It is expelled after birth.

意味（2）

(botany) In flowering plants, the part of the ovary where ovules develop; in non-flowering plants where the spores develop.