pa·rab·o·loid

(pə-răb′ə-loid′)

A surface having parabolic sections parallel to a single coordinate axis and elliptic or circular sections perpendicular to that axis.

pa·rab′o·loi′dal (-loid′l) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

paraboloid

(pəˈræbəˌlɔɪd)

(Mathematics) 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 x²/a² ± y²/b² = 2cz

paˌraboˈloidal adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pa•rab•o•loid

(pəˈræb əˌlɔɪd)

n.

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

[1650–60]

pa•rab`o•loi′dal, adj.

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Noun

paraboloid - a surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis

plane figure, two-dimensional figure - a two-dimensional shape

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