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[kon-vuh-loo-shuh n] /ˌkɒn vəˈlu ʃən/
a rolled up or coiled condition.
a rolling or coiling together.
a turn of anything coiled; whorl.
Anatomy. one of the sinuous folds or ridges of the surface of the brain.
Origin of convolution
1535-45; < Latin convolūt- (see convolute) + -ion
Related forms
convolutional, convolutionary
[kon-vuh-loo-shuh-ner-ee] /ˌkɒn vəˈlu ʃəˌnɛr i/ (Show IPA),
3. twist, winding, sinuosity. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for convolution
Historical Examples
  • Every convolution of those filaments is photographed on my brain.

    The Destroyer Burton Egbert Stevenson
  • Every fibre has its function, every convolution its purpose.

    How to Become Rich

    William Windsor
  • Every minute convolution had been followed to an incredible point of perfection.

    The Sword Frank Quattrocchi
  • It would, indeed, seem to be true that folded away in some convolution of our brain are the faculties of the fish and the bird.

    Number Seventeen Louis Tracy
  • Thus the skull becomes thinner at the site of every active organ, and thicker over every convolution that is inactive.

  • But it is not clear that this may not be a case of diminished complexity of convolution going hand in hand with smallness of size.

  • It was in other words to trace the figure in the carpet through every convolution, to reproduce it in every tint.

    Embarrassments Henry James
  • He regarded the organ of language as a convolution lying on the super-orbital plate, behind the position of the eyeball.

  • This convolution is comparatively defective in animals generally, but more developed in birds of superior vocal powers.

  • The brain is large, and in quantity and amount of convolution exceeds that of the land Carnivores.

British Dictionary definitions for convolution


a twisting together; a turn, twist, or coil
an intricate, involved, or confused matter or condition
Also called gyrus. any of the numerous convex folds or ridges of the surface of the brain
Derived Forms
convolutional, convolutionary, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for convolution

1540s, from Latin convolutus, past participle of convolvere "to roll together," from com- "together" (see com-) + volvere "to roll" (see volvox).

Online Etymology Dictionary, © 2010 Douglas Harper
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convolution in Medicine

convolution con·vo·lu·tion (kŏn'və-lōō'shən)

  1. A form or part that is folded or coiled.

  2. One of the convex folds of the surface of the brain.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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