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Meaning of hyperbolic paraboloid

hyperbol'ic parab'oloid

Pronunciation: [key]
— Geom. Geom.
  1. a paraboloid that can be put into a position such that its sections parallel to one coordinate plane are hyperbolas, with its sections parallel to the other two coordinate planes being parabolas. Cf. elliptic paraboloid.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.