placental
/pləˈsɛntl/
adjective
- Relating to or having a placenta (the organ that nourishes a developing baby inside the womb).
- Humans are placental mammals, meaning the baby grows inside the mother's uterus with a placenta.
- Most mammals, including dogs and cats, are placental animals.
- The placental connection provides oxygen and nutrients to the growing fetus.
noun
- A mammal that develops inside its mother's body with a placenta.
- Whales are placentals, even though they live in the ocean.
- Placentals give birth to live young that have been nourished by a placenta.
- Unlike marsupials, placentals have a longer gestation period inside the mother.
Antonyms