Noun

• S: (n) involution (reduction in size of an organ or part (as in the return of the uterus to normal size after childbirth))
• S: (n) involution (a long and intricate and complicated grammatical construction)
• S: (n) elaborateness, elaboration, intricacy, involution (marked by elaborately complex detail)
• S: (n) engagement, participation, involvement, involution (the act of sharing in the activities of a group) "the teacher tried to increase his students' engagement in class activities"
• S: (n) exponentiation, involution (the process of raising a quantity to some assigned power)
• S: (n) involution, enfolding (the action of enfolding something)