paraboloid

[ puh-rab-uh-loid ]
/ pəˈræb əˌlɔɪd /
|

noun Geometry.

a surface that can be put into a position such that its sections parallel to at least one coordinate plane are parabolas.

Nearby words

  1. parabolic,
  2. parabolic aerial,
  3. parabolic antenna,
  4. parabolic mirror,
  5. parabolize,
  6. parabrake,
  7. parabulia,
  8. paracasein,
  9. paracel islands,
  10. paracelsus


Origin of paraboloid

First recorded in 1650–60; parabol(a) + -oid

Related formspa·rab·o·loi·dal [puh-rab-uh-loid-l, par-uh-buh-] /pəˌræb əˈlɔɪd l, ˌpær ə bə-/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for paraboloid


British Dictionary definitions for paraboloid

paraboloid

/ (pəˈræbəˌlɔɪd) /

noun

a geometric surface whose sections parallel to two coordinate planes are parabolic and whose sections parallel to the third plane are either elliptical or hyperbolic. Equations x ²/ a ² ± y ²/ b ² = 2 cz
Derived Formsparaboloidal, 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

Science definitions for paraboloid

paraboloid

[ pə-răbə-loid′ ]

A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.