ovisac
/ˈoʊvɪsæk/
noun
- A small sac or pouch in the body that contains an egg or eggs, especially in animals that lay eggs.
- The frog's ovisac swelled as it filled with eggs before spawning.
- Each ovisac in the insect's body held dozens of developing eggs.
- The biologist examined the ovisac of the fish under a microscope.