[ kon-vuh-loo-shuhn ]
/ 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.

Nearby words

  1. convoker,
  2. convolute,
  3. convoluted,
  4. convoluted tubule,
  5. convolutely,
  6. convolutionary,
  7. convolve,
  8. convolvulaceous,
  9. convolvulus,
  10. convoy

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

Examples from the Web for convolution

British Dictionary definitions for convolution


/ (ˌkɒnvəˈluːʃən) /


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

Medicine definitions for convolution


[ kŏn′və-lōōshən ]


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.