Definitions

1. noun

A membrane that encloses the embryo in a mammal, bird, or reptile, and is formed from the blastoderm.

“The amnion of the fetus develops to protect it from external factors.”

2. noun

A thin, usually transparent membrane or sac.

“The amnion of the jellyfish helped it to swim and protect its internal organs.”

3. noun

A layer or membrane in certain invertebrates.

“The amnion of the insect plays a crucial role in its development process.”