Involution

/ɪnvəlˈuːʃən/

Involution

the action of enfolding something

synonyms : enfolding

the process of raising a quantity to some assigned power

the act of sharing in the activities of a group

synonyms : engagement

marked by elaborately complex detail

a long and intricate and complicated grammatical construction

reduction in size of an organ or part (as in the return of the uterus to normal size after childbirth)

Examples

1. and they call this thymic involution okay or or thymic atrophy atrophy means it shrinks