noun, plural is·chi·a [is-kee-uh] /ˈɪs ki ə/. Anatomy.
the lower portion of either innominate bone.
either of the bones on which the body rests when sitting.
Origin of ischium
1640–50; < Latin < Greek ischíon hip-jointRelated formsis·chi·ad·ic [is-kee-ad-ik] /ˌɪs kiˈæd ɪk/, is·chi·at·ic [is-kee-at-ik] /ˌɪs kiˈæt ɪk/, is·chi·al, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for ischium
Historical Examples of ischium
British Dictionary definitions for ischium
noun plural -chia (-kɪə)
Derived Formsischial, adjective
one of the three sections of the hipbone, situated below the ilium
Word Origin for ischium
C17: from Latin: hip joint, from Greek iskhion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for ischium
"the seat bone," 1640s, from Latin, from Greek iskhion "hip joint," in plural, "the hips," probably from iskhi "loin," of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
n. pl. is•chi•a (-kē-ə)
Related formsis′chi•ad′ic (-ăd′ĭk) adj.is′chi•al (-əl) adj.is′chi•at′ic (-ăt′ĭk) adj.
The lowest of the three major bones that constitute each half of the pelvis, distinct at birth but later becoming fused with the ilium and pubis.ischial bone
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
The lowest of the three major bones that constitute each half of the pelvis, distinct at birth but later becoming fused with the ilium and pubis.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.