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epitrochoid
[ ep-i-troh-koid ]
Geometry.
- a plane curve generated by the motion of a fixed point on the radius or extension of the radius of a circle that rolls externally, without slipping, on a fixed circle. The epitrochoid is a generalization of the epicycloid.
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Word History and Origins
Origin of epitrochoid1
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Example Sentences
The curve may be regarded as an epitrochoid (see Epicycloid) in which the rolling and fixed circles have equal radii.
From Project Gutenberg
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