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hypotrochoid |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Hypotrochoid \Hy`po*tro"choid\, n. [Pref. hypo- + trochoid.] (Geom.) A curve, traced by a point in the radius, or radius produced, of a circle which rolls upon the concave side of a fixed circle. See {Hypocycloid}, {Epicycloid}, and {Trochoid}.