from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The ball-and-socket joint formed by the head of the femur and the cup-shaped cavity of the hipbone.

from The Century Dictionary.

  • noun The articulation of the femur or thigh-bone with the innominate bone or haunch-bone; the proximal articulation of the hind limb, corresponding to the shoulder-joint of the fore limb.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the ball-and-socket joint between the head of the femur and the acetabulum


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