Definitions

1. verb

to form or become a pouch or sac by invagination

“During embryonic development, the cells invaginate to create an opening for the digestive system.”

2. verb

to turn inward or in upon itself, especially in a folding manner

“The petals of the flower invaginate as they close for the night.”

3. verb

to take in or engulf something

“The cell membrane invaginated to engulf the foreign particle.”

4. noun

the process of invagination

“Invagination is a critical step in the development of many organisms.”