|ball-and-socket joint or ball joint|
|1.||a coupling between two rods, tubes, etc, that consists of a spherical part fitting into a spherical socket, allowing free movement within a specific conical volume|
|2.||anatomy Also called: multiaxial joint a bony joint, such as the hip joint, in which a rounded head fits into a rounded cavity, allowing a wide range of movement|
|ball joint or ball joint|
ball-and-socket joint n.
A multiaxial joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint. Also called cotyloid joint, enarthrodial joint, enarthrosis, spheroid joint.
|ball-and-socket joint (bôl'ən-sŏk'ĭt) Pronunciation Key