Definition of amniotic sac in English:

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amniotic sac

noun

The fluid-filled sac that contains and protects a fetus in the womb.
Example sentences
  • 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

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