[ il-ee-uh m ]
/ ˈɪl i əm /

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

the broad, upper portion of either hipbone.

Nearby words

  1. iliopectineal line,
  2. iliopsoas muscle,
  3. iliotibial band,
  4. iliotrochanteric,
  5. iliotrochanteric ligament,
  6. ilk,
  7. ilka,
  8. ilkeston,
  9. ilkley,
  10. ill

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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for subilium


/ (ˈɪlɪəm) /


the Latin name for ancient Troy


/ (ˈɪlɪəm) /

noun plural -ia (-ɪə)

the uppermost and widest of the three sections of the hipbone
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 subilium



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

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for subilium


[ sŭb-ĭlē-əm ]


The portion of the ilium contributing to the acetabulum.
Related formssub•ili•ac′ (-ăk′) adj.


[ ĭlē-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.iliac bone

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

Science definitions for subilium


[ ĭlē-əm ]

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.