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hyperboloidal

 - 3 dictionary results

hy⋅per⋅bo⋅loid

  [hahy-pur-buh-loid]
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–noun Mathematics.
a quadric surface having a finite center and some of its plane sections hyperbolas. Equation: x2/a2 + y2/b2 − z2/c2 = 1.
Origin:
1720–30; hyperbol(a) + -oid

Related forms:
hy⋅per⋅bo⋅loi⋅dal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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hy·per·bo·loid   (hī-pûr'bə-loid')   


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n.  Either of two quadric surfaces generated by rotating a hyperbola about either of its main axes and having a finite center with certain plane sections that are hyperbolas and others that are ellipses or circles.
hy·per'bo·loid'al (-loid'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
hyperboloid   (hī-pûr'bə-loid')  Pronunciation Key 
Either of two surfaces generated by rotating a hyperbola about either of its main axes and having a finite center, with certain plane sections that are hyperbolas and others that are ellipses or circles.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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