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[il-ee-uh m] /ˈɪl i əm/
noun, plural ilia
[il-ee-uh] /ˈɪl i ə/ (Show IPA).
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 forms
preilium, noun, plural preilia.
subilium, noun, plural subilia.
Can be confused
ileum, ilium, Ilium. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for ilia
Historical Examples
  • I want to know where a girl named ilia is and how she vanished from my house.

    The Tour Louis Couperus
  • This gentleman was elderly, and had a son on board the ilia.

    Missy Miriam Coles Harris
  • It was with a real enthusiasm that ilia gathered and studied plants; he soon became thoroughly acquainted with the local flora.

  • By this time ilia Ivanovitch was beginning to become bald and obese.

  • In Marsupialia as a rule only one vertebra is directly united to the ilia, but one or two more are commonly fused to the first.

    The Vertebrate Skeleton Sidney H. Reynolds
  • The ribs which connect the sacral vertebrae with the ilia are however large.

    The Vertebrate Skeleton Sidney H. Reynolds
  • The ilia are not connected with the sacrum by ossified sacral ribs.

    The Vertebrate Skeleton Sidney H. Reynolds
  • He is then prevented from committing suicide, but ilia falls by her own hand.

  • The signature of 'Emilia Alessandra Belloni' was given with her wonted proud flourish.

    Sandra Belloni, Complete George Meredith
  • My ilia: she was the queen of my house, though she was a slave!

    The Tour Louis Couperus
British Dictionary definitions for ilia


the plural of ilium


(in Roman legend) the daughter of Aeneas and Lavinia, who, according to some traditions, was the mother of Romulus and Remus See also Rhea Silvia


noun (pl) -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
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Word Origin and History for ilia

Latin plural of ilium (see ileum).



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

Online Etymology Dictionary, © 2010 Douglas Harper
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ilia in Medicine

ilium il·i·um (ĭl'ē-əm)
n. pl. il·i·a (-ē-ə)
The uppermost and widest of the three bones constituting either of the lateral halves of the pelvis. Also called iliac bone.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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ilia 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.

iliac adjective
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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