trochoid
tro·choid / ˈtrōˌkoid/ • adj. 1. Anat. denoting a joint in which one element rotates on its own axis (e.g., the atlas vertebra).2. Geom. denoting a curve traced by a point on a radius of a circle rotating along a straight line or another circle (a cycloid, epicycloid, or hypocycloid).3. Zool. having or denoting a form of mollusk shell that is conical with a flat base, like a top shell.• n. 1. a trochoid curve.2. a trochoid joint.DERIVATIVES: tro·choi·dal / trōˈkoidl/ adj.
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ball-and-socket joint
ball-and-socket joint
ball-and-socket joint, in engineering, mechanical connection used between parts that…
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