• synonyms


[ip-suh-lat-er-uh l]
adjective Anatomy.
  1. pertaining to, situated on, or affecting the same side of the body: ipsilateral paralysis.
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Compare contralateral.

Origin of ipsilateral

1905–10; < Latin ipsi- (combining form of ipse oneself, the very one) + lateral
Related formsip·si·lat·er·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for ipsilateral


  1. on or affecting the same side of the body
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Word Origin

C20: irregularly formed from Latin ipse self + lateral
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 ipsilateral


1907, from Latin ipse "self" + lateral.

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Online Etymology Dictionary, © 2010 Douglas Harper

ipsilateral in Medicine


  1. Located on or affecting the same 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.