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1. (n.) ischium
the backward-facing lower bone of each half of the vertebrate pelvis; the lower portion of either innominate bone in humans.
2. ischium
either of the bones on which the body rests when sitting.
Etymology: (1640–50; < L < Gk ischíon hip joint)
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| Definition of 'ischium' |
Princeton's WordNet |
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1. (noun) ischium, ischial bone, os ischii
one of the three sections of the hipbone; situated below the ilium
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| Definition of 'ischium' |
Webster Dictionary |
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1. (noun) ischium
the ventral and posterior of the three principal bones composing either half of the pelvis; seat bone; the huckle bone
2. (noun) ischium
one of the pleurae of insects
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