Webster's Revised Unabridged Dictionary · 1913

Epicycloidal

Epicycloidal , adjective

Pertaining to the epicycloid, or having its properties.
Collocations (1)
Epicycloidal wheel , a device for producing straight-line motion from circular motion, on the principle that a pin fastened in the periphery of a gear wheel will describe a straight line when the wheel rolls around inside a fixed internal gear of twice its diameter.