ischium

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is·chi·um / ˈiskēəm/ • n. (pl. -chi·a / -kēə/ ) the curved bone forming the base of each half of the pelvis. DERIVATIVES: is·chi·ad·ic / ˌiskēˈadik/ adj. is·chi·al / -kēəl/ adj.

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ischium The most posterior of the three bones that make up each half of the pelvic girdle. See also ilium; pubis.

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ischium In tetrapods, the part of the pelvis that projects backward on the ventral side. In Primates, it bears the weight of the sitting animal.

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ischium In tetrapods, the part of the pelvis that projects backward on the ventral side. In Primates, it bears the weight of the sitting animal.

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ischium (isk-iŭm) n. a bone forming the lower part of each side of the hip bone (see also pelvis).
ischiac, ischial adj.

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