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toroid

 - 3 dictionary results

to⋅roid

[tawr-oid, tohr-]
–noun Geometry.
1. a surface generated by the revolution of any closed plane curve or contour about an axis lying in its plane.
2. the solid enclosed by such a surface.

Origin:
1895–1900; tor(us) + -oid
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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to·roid   (tôr'oid', tōr'-)   
n.  
  1. Mathematics

    1. A surface generated by a closed curve rotating about, but not intersecting or containing, an axis in its own plane.

    2. A solid having such a surface.

  2. A body having the shape of a toroid.


[tor(us) + -oid.]
to·roi'dal (tô-roid'l) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
toroid   (tôr'oid')  Pronunciation Key 
A surface generated by rotating a closed curve about an axis that is in the same plane as the curve but does not intersect it.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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