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pitch circle
noun
, Machinery.
- an imaginary circle within the profiles of the teeth of a gear, such that it rotates against a similar circle rotating at the same rate on a meshing gear.
pitch circle
noun
- an imaginary circle passing through the teeth of a gearwheel, concentric with the gearwheel, and having a radius that would enable it to be in contact with a similar circle around a mating gearwheel
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Word History and Origins
Origin of pitch circle1
First recorded in 1810–20
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