/ Dictionary / Index H hypocycloid: Meaning and Definition of Find definitions for: hy•po•cy•cloid Pronunciation: (hī"pu-sī'kloid), [key] — n. Geom. a curve generated by the motion of a point on the circumference of a circle that rolls internally, without slipping, on a given circle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hypocycloid (Thesaurus) hypocrite hypoderma Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language