involution

n 1: reduction in size of an organ or part (as in the return of the uterus to normal size after childbirth)

2: a long and intricate and complicated grammatical construction

3: marked by elaborately complex detail syn elaborateness, elaboration, intricacy

4: the act of sharing in the activities of a group; "the teacher tried to increase his students' engagement in class activities" syn engagement, participation, involvement ant non-engagement, non-engagement, non-engagement

5: the process of raising a quantity to some assigned power syn exponentiation

6: the action of enfolding something syn enfolding

Source: WordNet. Princeton University

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