• synonyms


  1. of, relating to, or situated near the ilium.
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Origin of iliac

First recorded in 1510–20; ili(um) + -ac
Related formstrans·il·i·ac, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for iliac

Historical Examples

  • The country doctors again brought in a verdict of iliac passion.


    George Sand

  • At the left groin, the iliac vein was greatly distended with pus.

  • She drew the girl to the window and pointed to a group of dim figures near the iliac bushes.

    The Two Vanrevels

    Booth Tarkington

  • It is not united with its fellow, and is represented by a plate with slightly developed pubic and iliac processes.

  • The iliac section never articulates with the vertebral column.

British Dictionary definitions for iliac


  1. anatomy of or relating to the ilium
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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

Word Origin and History for iliac


1510s, "pertaining to the disease ileus or colic," from French iliaque or directly from Late Latin iliacus, from ilium "flank, side, entrails" (see ileum).

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Online Etymology Dictionary, © 2010 Douglas Harper

iliac in Medicine


  1. Of, relating to, or situated near the ilium.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

iliac in Science


Plural ilia
  1. The uppermost and widest of the three bones that fuse together to form each of the hipbones. See more at skeleton.
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Related formsiliac adjective
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.