ball-and-socket jointball-and-sock·et joint
- A synovial joint, such as the shoulder or hip joint, in which a spherical knob or knoblike part of one bone fits into a cavity or socket of another, so that some degree of rotary motion is possible in every direction. Also called enarthrosis .
- A joint, as in a mechanical device, that permits rotary movement in all directions through the movement of a ball in a socket. Also called ball joint .
(plural ball and socket joints)
- Alternative spelling of ball-and-socket joint.