• synonyms


  1. the use of one hand in preference to the other.Compare handedness.
  2. the dominance or superior development of one side of the body or brain.
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Origin of laterality

First recorded in 1640–50; lateral + -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for laterality

Historical Examples

  • And therefore this prevalency is either uncertainly placed in the laterality, or custom determines its differency.

    The Works of Sir Thomas Browne (Volume 2 of 3)

    Thomas Browne

British Dictionary definitions for laterality


  1. psychol the difference in the mental functions controlled by the left and right cerebral hemispheres of the brain
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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

laterality in Medicine


  1. Preferential use of limbs of one side of the body.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.