'Epicycloid' definitions:

Definition of 'epicycloid'

(from WordNet)
noun
A line generated by a point on a circle rolling around another circle

Definition of 'Epicycloid'

From: GCIDE
  • Epicycloid \Ep`i*cy"cloid\, n. [Epicycle + -oid: cf. F. ['e]picyclo["i]de.] (Geom.) A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle. [1913 Webster]
  • Note: Any point rigidly connected with the rolling circle, but not in its circumference, traces a curve called an epitrochoid. The curve traced by a point in the circumference of the rolling circle when it rolls on the concave side of a fixed circle is called a hypocycloid; the curve traced by a point rigidly connected with the rolling circle in this case, but not its circumference, is called a hypotrochoid. All the curves mentioned above belong to the class class called roulettes or trochoids. See Trochoid. [1913 Webster]

Words containing 'Epicycloid'