invaginate
/ɪnˈvædʒɪneɪt/
verb
- To fold or turn inward to form a pouch or tube, especially in a biological or medical context.
- During development, the cells invaginate to form the neural tube.
- The surgeon observed the tissue begin to invaginate as part of the healing process.
- In the experiment, the membrane invaginated when pressure was applied.