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ischium

[is-kee-uh m] /ˈɪs ki əm/
noun, plural ischia
[is-kee-uh] /ˈɪs ki ə/ (Show IPA).
Anatomy
1.
the lower portion of either innominate bone.
2.
either of the bones on which the body rests when sitting.
Origin
1640-1650
1640-50; < Latin < Greek ischíon hip-joint
Related forms
ischiadic
[is-kee-ad-ik] /ˌɪs kiˈæd ɪk/ (Show IPA),
ischiatic
[is-kee-at-ik] /ˌɪs kiˈæt ɪk/ (Show IPA),
ischial, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ischiadic

ischium

/ˈɪskɪəm/
noun (pl) -chia (-kɪə)
1.
one of the three sections of the hipbone, situated below the ilium
Derived Forms
ischial, adjective
Word Origin
C17: from Latin: hip joint, from Greek iskhion
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 ischiadic

ischium

n.

"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
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ischiadic in Medicine

ischium is·chi·um (ĭs'kē-əm)
n. pl. is·chi·a (-kē-ə)
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. Also called ischial bone.


is'chi·ad'ic (-ād'ĭk) adj.
is'chi·al (-əl) adj.
is'chi·at'ic (-āt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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ischiadic in Science
ischium
  (ĭs'kē-əm)   
Plural ischia
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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