ball-and-socket joint
noun
1 ball-and-socket joint
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.
Dutch: balhoofd, kogelgewricht
2 ball-and-socket joint
A joint that can rotate within a socket.
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