[il-ee-uh m]

noun, plural il·i·a [il-ee-uh] /ˈɪl i ə/. Anatomy.

the broad, upper portion of either hipbone.

Origin of ilium

1705–1710; < New Latin, special use of Medieval Latin īlium, as singular of Latin īlia; see ileum
Related formspre·il·i·um, noun, plural pre·il·i·a.sub·il·i·um, noun, plural sub·il·i·a.
Can be confusedileum ilium Ilium


[il-ee-uh m]


Latin name of ancient Troy.
Can be confusedileum ilium Ilium Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ilium

Historical Examples of ilium

  • Meanwhile Mindarus, while sacrificing to Athena at Ilium, had observed the battle.



  • Not yet was Ilium nor the towers of Pergama reared; they dwelt in the valley bottoms.

  • No more are we a Trojan people; Ilium and the great glory of the Teucrians is no more.

  • Phaetho was driven by the wind from Ilium to Macedonia, and met me at Pella.

    The Letters of Cicero, Volume 1

    Marcus Tullius Cicero

  • Even the old men of Ilium were ready "to suffer long for such a woman."

British Dictionary definitions for ilium


noun plural -ia (-ɪə)

the uppermost and widest of the three sections of the hipbone



the Latin name for ancient Troy
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 ilium

pelvic bone, 1706, Modern Latin, from Latin ilia (plural) "groin, flank" (see ileum).

Online Etymology Dictionary, © 2010 Douglas Harper

ilium in Medicine



n. pl. il•i•a (-ē-ə)

The uppermost and widest of the three bones constituting either of the lateral halves of the pelvis.iliac bone
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

ilium in Science



Plural ilia

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