involution

nouns

reduction in size of an organ or part (as in the return of the uterus to normal size after childbirth)
involution
is a type of (narrower)
a process occurring in living organisms
biological process, organic process
a long and intricate and complicated grammatical construction
involution
is a type of (narrower)
a group of words that form a constituent of a sentence and are considered as a single unit
"I concluded from his awkward constructions that he was a foreigner"
construction, expression, grammatical construction
marked by elaborately complex detail
elaborateness, elaboration, intricacy, involution
the act of sharing in the activities of a group
"the teacher tried to increase his students' engagement in class activities"
engagement, involution, involvement, participation
is derived from
involve
the process of raising a quantity to some assigned power
exponentiation, involution
the action of enfolding something
enfolding, involution