ball-and-socket joint

Definitions of ball-and-socket joint
  1. noun
    a joint that can rotate within a socket
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    type of:
    joint
    junction by which parts or objects are joined together
  2. noun
    a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone
    synonyms: articulatio spheroidea, cotyloid joint, enarthrodial joint, enarthrosis, spheroid joint
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    types:
    articulatio humeri, shoulder, shoulder joint
    a ball-and-socket joint between the head of the humerus and a cavity of the scapula
    articulatio coxae, coxa, hip, hip joint
    the ball-and-socket joint between the head of the femur and the acetabulum
    type of:
    articulatio synovialis, diarthrosis, synovial joint
    a joint so articulated as to move freely
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