involution
EnglishEdit
EtymologyEdit
From Latin involutio, from volvere ‘to roll’.
PronunciationEdit
NounEdit
involution (plural involutions)
 entanglement; a spiralling inwards; intricacy

 1968: ‘Gomez,’ said the mortician, ‘is an expert only on the involutions of his own rectum.’ — Anthony Burgess, Enderby Outside

 (mathematics) An endofunction whose square is equal to the identity function; a function equal to its inverse.
 1996, Alfred J. Menezes et al, Handbook of Applied Cryptography, CRC Press, page 10:
 Involutions have the property that they are their own inverses.
 1996, Alfred J. Menezes et al, Handbook of Applied Cryptography, CRC Press, page 10:
 (physiology) The regressive changes in the body occurring with old age.
 (mathematics, obsolete) A power: the result of raising one number to the power of another.
Derived termsEdit
See alsoEdit
TranslationsEdit
mathematics; an endofunction whose square is equal to the identity function; a function equal to its inverse

