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adjective
1.
resembling a circle; circular.
2.
(of the scale of a fish) smooth-edged, more or less circular in form, and having concentric striations.
3.
(of a fish) having such scales.
4.
Psychiatry. of or noting a personality type characterized by wide fluctuation in mood within the normal range.
noun
5.
a cycloid fish.
6.
Geometry. a curve generated by a point on the circumference of a circle that rolls, without slipping, on a straight line.
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Cycloid
is always a great word to know.
So is interrobang. Does it mean:
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| a stew of meat, vegetables, potatoes, etc. |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To cycloid
Collins
World English Dictionary
| cycloid (ˈsaɪklɔɪd) | |
| —adj | |
| 1. | resembling a circle |
| 2. | (of fish scales) rounded, thin, and smooth-edged, as those of the salmon |
| 3. | psychiatry See also cyclothymia (of a type of personality) characterized by exaggerated swings of mood between elation and depression |
| —n | |
| 4. | geometry Compare trochoid the curve described by a point on the circumference of a circle as the circle rolls along a straight line |
| 5. | a fish that has cycloid scales |
| cy'cloidal | |
| —adj | |
| cy'cloidally | |
| —adv | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
cycloid  (sī'kloid') Pronunciation Key
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The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia
cycloid
the curve generated by a point on the circumference of a circle that rolls along a straight line. If r is the radius of the circle and theta (theta) is the angular displacement of the circle, then the polar equations of the curve are x = r(theta - sin theta) and y = r(1 - cos theta)
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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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