pivot joint

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pivot joint

n.
A joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other, permitting rotating movement, as in the proximal articulation between the radius and ulna. Also called rotary joint, trochoid joint.
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Noun1.pivot joint - a freely moving joint in which movement is limited to rotationpivot joint - a freely moving joint in which movement is limited to rotation; "the articulation of the radius and ulna in the arm is a pivot joint"
articulatio synovialis, diarthrosis, synovial joint - a joint so articulated as to move freely