os ischii

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Noun1.os ischii - one of the three sections of the hipboneos ischii - one of the three sections of the hipbone; situated below the ilium
bone, os - rigid connective tissue that makes up the skeleton of vertebrates
articulatio coxae, coxa, hip joint, hip - the ball-and-socket joint between the head of the femur and the acetabulum
pelvic arch, pelvic girdle, pelvis, hip - the structure of the vertebrate skeleton supporting the lower limbs in humans and the hind limbs or corresponding parts in other vertebrates
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