ball-and-socket joint definition

  • noun:
    • A synovial combined, like the neck or hip joint, which a spherical knob or knoblike part of one bone meets into a cavity or socket of another, in order that some degree of rotary movement is possible in almost every direction. Also referred to as enarthrosis.
    • A joint, as in a mechanical device, that enables rotary motion everywhere through the activity of a ball in a socket. Also referred to as ball joint.
    • A joint where one section has a rounded end while the after that section has actually a bowl-shaped end, aided by the curved end being fitted to the bowl shape, enabling the first portion to go around an indefinite number of axes which have one common center.

Related Sources

  • Hypernym for "ball-and-socket joint"
  • Medical Dictionary for "ball-and-socket joint"
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