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  • noun Plural form of epitrochoid.


Sorry, no etymologies found.


  • The _ellipse_, then, is described by these arrangements because it is a special form of the epitrochoid; and various other epitrochoids may be traced with Suardi's pen by substituting other wheels, with different numbers of teeth, for a in Fig. 43.

    Scientific American Supplement, No. 470, January 3, 1885


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