spheroid joint

English Thesaurus

1. a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone (noun.body)

hypernym	:	articulatio synovialis, diarthrosis, synovial joint,
definition	:	a joint so articulated as to move freely (noun.body)

hyponym	:	articulatio humeri, shoulder, shoulder joint,
definition	:	a ball-and-socket joint between the head of the humerus and a cavity of the scapula (noun.body)

hyponym	:	articulatio coxae, coxa, hip, hip joint,
definition	:	the ball-and-socket joint between the head of the femur and the acetabulum (noun.body)