In`vo*lu"tion (?), n. [L. involutio: cf. F. involution. See Involve.]
The act of involving or infolding.
The state of being entangled or involved; complication; entanglement.
All things are mixed, and causes blended, by mutual involutions.
That in which anything is involved, folded, or wrapped; envelope.
Sir T. Browne.
The insertion of one or more clauses between the subject and the verb, in a way that involves or complicates the construction.
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.
The relation which exists between three or more sets of points, a.axb7;, b.bxb7;, c.cxb7;, so related to a point O on the line, that the product Oa.Oaxb7; = Ob.Obxb7; = Oc.Ocxb7; is constant. Sets of lines or surfaces possessing corresponding properties may be in involution.
The return of an enlarged part or organ to its normal size, as of the uterus after pregnancy.
© Webster 1913.