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hypocycloid

[hahy-puh-sahy-kloid] /ˌhaɪ pəˈsaɪ klɔɪd/
noun, Geometry
1.
a curve generated by the motion of a point on the circumference of a circle that rolls internally, without slipping, on a given circle.
Origin
1835-1845
1835-45; hypo- + cycloid
Related forms
hypocycloidal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for hypocycloidal

hypocycloid

/ˌhaɪpəˈsaɪklɔɪd/
noun
1.
a curve described by a point on the circumference of a circle as the circle rolls around the inside of a fixed coplanar circle Compare epicycloid, cycloid (sense 4)
Derived Forms
hypocycloidal, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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hypocycloidal in Science
hypocycloid
  (hī'pō-sī'kloid')   

The curve described by a point on the circumference of a circle as the circle rolls on the inside of the circumference of a second, fixed circle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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