Ĭn'vo-lū'tion, n.
[Lat. involutio, Fr. involution, Pr. involutio, envolucio, O. Sp. involucion, It. involuzione. See INVOLVE.]
Sense 1. The action of involving or infolding.
Sense 2. The state of being entangled or involved; complication.
All things are mixed, and causes blended, by mutual involutions. Glanville.
Sense 3. That in which any thing is involved, folded, or wrapped; envelope.
Sense 4. (Gram.) The insertion of one or more clauses or members of a sentence between the agent or subject and the verb, in a way that involves or complicates the construction, or a third intervening member within a second, &c.; as, habitual falsehood, if we may judge from experience, infers absolute depravity.
Sense 5. (Math.) The act or process of raising a quantity to any power assigned; the multiplication of a quantity into itself a given number of times; thus, 2 × 2 × 2 = 8. Here 8, the third power of 2, is found by involution, or multiplying the number into itself, and the product by the same number.