ball-and-socket joint


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Related to ball-and-socket joint: Spheroidal joint

ball-and-sock·et joint

(bôl′ən-sŏk′ĭt)
n.
1. 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.
2. 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.

ball-and-socket joint

or

ball joint

n
1. (Mechanical Engineering) 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) 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′-and-sock′et joint`


n.
1. Also called enarthrosis. an anatomical joint in which the rounded end of one bone fits into a cuplike end of the other bone, as at the hip or shoulder.
2. Also called ball joint. a similar mechanical joint used to connect rods, pipes, etc.
[1660–70]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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 boneball-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
articulatio synovialis, diarthrosis, synovial joint - a joint so articulated as to move freely
articulatio humeri, shoulder joint, shoulder - a ball-and-socket joint between the head of the humerus and a cavity of the scapula
articulatio coxae, coxa, hip joint, hip - the ball-and-socket joint between the head of the femur and the acetabulum
2.ball-and-socket joint - a joint that can rotate within a socketball-and-socket joint - a joint that can rotate within a socket
joint - junction by which parts or objects are joined together
socket - receptacle where something (a pipe or probe or end of a bone) is inserted
Translations

ball-and-socket joint

nKugelgelenk nt
References in periodicals archive ?
It is proposed that the elastomer ring body (4) is arranged radially on the outside at the inner wall of the outer sleeve (3) and radially on the inside at a sleeve-like bearing shell (5), which slidingly cooperates with the inner part (1), forming a ball-and-socket joint.
A ball-and-socket joint (shoulder and hip)--lets you move in many directions.
But with the computer model, they discovered that the animal's head, which swiveled on a huge ball-and-socket joint that Chapman likens to a "big, bony trailer hitch," was remarkably well balanced.