INVOLUTIONS

Noun

involutions

plural of involution

Source: Wiktionary

INVOLUTION

In`vo*lu"tion, n. Etym: [L. involutio: cf. F. involution. See Involve.]

1. The act of involving or infolding.

2. The state of being entangled or involved; complication; entanglement. All things are mixed, and causes blended, by mutual involutions. Glanvill.

3. That in which anything is involved, folded, or wrapped; envelope. Sir T. Browne.

4. (Gram.)

Definition: The insertion of one or more clauses between the subject and the verb, in a way that involves or complicates the construction.

5. (Math.)

Definition: The act or process of raising a quantity to any power assigned; the multiplication of a quantity into itself a given number of times;

– the reverse of evolution.

6. (Geom.)

Definition: The relation which exists between three or more sets of points, a.a', b.b', c.c', so related to a point O on the line, that the product Oa.Oa' = Ob.Ob' = Oc.Oc' is constant. Sets of lines or surfaces possessing corresponding properties may be in involution.

7. (Med.)

Definition: The return of an enlarged part or organ to its normal size, as of the uterus after pregnancy.

Source: Webster’s Unabridged Dictionary 1913 Edition