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 formscon·vo·lu·tion·al, con·vo·lu·tion·ar·y [kon-vuh-loo-shuh-ner-ee] /ˌkɒn vəˈlu ʃəˌnɛr i/, adjective

Synonyms for convolution Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for convolution

Historical Examples of convolution

  • 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.

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 Formsconvolutional or 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

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

convolution in Medicine




A form or part that is folded or coiled.
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.