Definitions
from The Century Dictionary.
- noun In geometry, the curve traced by a point in the plane of a circle which rolls on the convex side of a fixed circle.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Geom.) A kind of curve. See
epicycloid , anytrochoid .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
geometric curve traced by a fixed point on one circle which rotates around the perimeter of another circle. Examples include the shape of theWankel engine
Etymologies
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Examples
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Mazda's new RX-8 sports car is unusual in its use of the rotary engine invented by Felix Wankel: a triangular rotor inside a combustion chamber that's a particular case of epitrochoid.
Mazda: rotary engine comeback Ray Girvan 2003
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Mazda's new RX-8 sports car is unusual in its use of the rotary engine invented by Felix Wankel: a triangular rotor inside a combustion chamber that's a particular case of epitrochoid.
Archive 2003-10-01 Ray Girvan 2003
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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 Various
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