from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The plane locus of a point fixed on a circle that rolls on the inside circumference of a fixed circle.

from The Century Dictionary.

  • noun In geometry, a curve described by a point on the circumference of a circle which rolls upon the inside of another circle.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Geom.) A curve traced by a point in the circumference of a circle which rolls on the concave side in the fixed circle. Cf. epicycloid, and trochoid.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun geometry The locus of a point on the circumference of a circle that rolls without slipping inside the circumference of another circle.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a line generated by a point on a circle that rolls around inside another circle


Sorry, no etymologies found.


Help support Wordnik (and make this page ad-free) by adopting the word hypocycloid.



Log in or sign up to get involved in the conversation. It's quick and easy.