placental
part of speech
adjective (placental); noun (a placental, placentals) (science)
meaning for a pupil
1) To do with the placenta, the organ that grows inside a mother during pregnancy to give the baby food and oxygen. tree →
2) (placental mammals) Mammals whose babies grow inside the mother with a placenta, such as humans, dogs, cats and whales. tree →
sense in the lessons
In science lessons on animal groups, placental mammals are compared with marsupials (kangaroos, koalas), whose babies grow in a pouch, and monotremes (platypus), which lay eggs. Most mammals are placental. In Australia and NZ, this contrast is a common topic.
examples
- Humans are placental mammals. tree →
- Kangaroos are marsupials, not placentals. tree →
- Whales and bats are placental mammals. tree →
- The placental blood carries food to the baby. tree →
- Australia has many marsupials but also placental mammals like dingoes. tree →
- Most mammals on Earth are placental. tree →
note
Adjective (also a noun in science). Noun: placenta (plural placentas or placentae). Pronounced "pluh-SEN-tul".
Trees and pragmatics
Every meaning and example of «placental» parsed by Mova, each sentence with its dependency tree and frames.