The fluid-filled sac that contains and protects a fetus in the womb.
- The amniotic sac that contains your baby begins to form about 12 days after conception.
- The outer cells will go on to form the placenta and amniotic sac that the baby will grow in.
- Before a baby is born, it is surrounded by water in the amniotic sac.
For editors and proofreaders
Syllabification: am·ni·ot·ic sac
Definition of amniotic sac in:
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.