ball and socket joint

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Related to ball and socket joint: gliding joint, hinge joint, pivot joint

ball and sock·et joint

a multiaxial synovial joint in which a more or less extensive sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint.

ball-and-socket joint

The most freely movable type of synovial joint, in which the ball-like end of one bone (e.g., the humerus, femur) is surrounded by a spherical cartilaginous encasement, or “socket” (e.g., hip joint), or a group of structures that act as a functionally spherical encasement (e.g., shoulder joint), which allows free mobility of the articulating bone.
References in periodicals archive ?
You have a ball and socket joint where your leg meets your hip.
The hip is a ball and socket joint, which allows the upper leg to move from side to side, back to front and to rotate.
The company molded 15 hollow beads of the material to connect the neck's ball and socket joints.