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paraboloid

[ puh-rab-uh-loid ]
/ pəˈræb əˌlɔɪd /
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noun Geometry.

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

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Origin of paraboloid

First recorded in 1650–60; parabol(a) + -oid
pa·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. 2021

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
paraboloidal, 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

Scientific 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.
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