ilium

noun

il·i·um | \ ˈi-lē-əm

plural ilia\ ˈi-lē-ə

Definition of ilium

: the broad, dorsal, upper, and largest of the three principal bones composing either half of the pelvis

Examples of ilium in a Sentence

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The last bones to go, the ilium and sacrum (the big hip bones atop the skeleton) are the heaviest bone structure. — Steve Johnson And Phil Geib, chicagotribune.com, "The dismantling of Sue the T. rex at the Field Museum," 3 Feb. 2018 Conclusion: Ilium can be quite difficult to master. — Jonathan H. Liu, WIRED, "Unearthing Treasures: Pergamon and Ilium," 14 June 2011

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ilium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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The first known use of ilium was in 1706

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ilium

noun

il·i·um | \ ˈil-ē-əm

plural ilia\ -ē-ə

Medical Definition of ilium

: the dorsal, upper, and largest one of the three bones composing either lateral half of the pelvis that in humans is broad and expanded above and narrower below where it joins with the ischium and pubis to form part of the acetabulum