paraboloid
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The equation for
a circular paraboloid is
x2/a2
+
y2/b2
= z.
pa·rab·o·loid
(pə-răb′ə-loid′)n.
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.
paraboloid
(pəˈræbəˌlɔɪd)n
(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
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 | 1. |  paraboloid - a surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axisplane figure, two-dimensional figure - a two-dimensional shape |