epitrochoid

English

Etymology

From epi- +‎ trochoid. This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.

Pronunciation

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Noun

epitrochoid (plural epitrochoids)

  1. A geometric curve traced by a fixed point on one circle which rotates around the perimeter of another circle. Examples include the shape of the Wankel engine

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See also