involution
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English[edit]
Etymology[edit]
From Latin involūtiō, from involvō.
Pronunciation[edit]
Noun[edit]
involution (plural involutions)
 Entanglement; a spiralling inwards; intricacy.
 1938, Xavier Herbert, Capricornia, chapter V, page 74, [1],
 […] usually his attention was diverted from her feet by her shrieks of laughter and the astounding involutions of her huge brownyellow frame.
 1968, Anthony Burgess, Enderby Outside, 2002, The Complete Enderby, page 302,
 ‘Gomez,’ said the mortician, ‘is an expert only on the involutions of his own rectum.’
 1938, Xavier Herbert, Capricornia, chapter V, page 74, [1],
 A complicated grammatical construction.
 (mathematics) An endofunction whose square is equal to the identity function; a function equal to its inverse.
 1996, Alfred J. Menezesm, Paul C. van Oorschot, Scott A. Vanstone, Handbook of Applied Cryptography, CRC Press, page 10,
 Involutions have the property that they are their own inverses.
 1996, Alfred J. Menezesm, Paul C. van Oorschot, Scott A. Vanstone, Handbook of Applied Cryptography, CRC Press, page 10,
 (medicine) The shrinking of an organ (such as the uterus) to a former size.
 (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 terms[edit]
Related terms[edit]
Translations[edit]
mathematics; an endofunction whose square is equal to the identity function; a function equal to its inverse

