Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of or relating to geometric surfaces that are defined by quadratic equations.

from The Century Dictionary.

  • noun In algebra, a homogeneous expression of the second degree in the variables.
  • In algebra and geometry, of the second degree; quadratic.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Math.) Of or pertaining to the second degree.
  • noun (Alg.) A quantic of the second degree. See quantic.
  • noun (Geom.) A surface whose equation in three variables is of the second degree. Spheres, spheroids, ellipsoids, paraboloids, hyperboloids, also cones and cylinders with circular bases, are quadrics.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mathematics A surface whose shape is defined in terms of a quadratic equation

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a curve or surface whose equation (in Cartesian coordinates) is of the second degree

Etymologies

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Examples

  • Markowitz also showed how the problem of actually calculating an optimum portfolio can be solved as a quadric programming problem.

    The Prize in Economics 1990 - Presentation Speech 1992

  • Applied with patented quadric optics non-imaginglens, luminaire efficiency over 90%

    LEDs Magazine Products 2010

  • Applied with patented quadric optics non-imaginglens, luminaire efficiency over 90%

    LEDs Magazine Products 2010

  • As spacing between casimir plates formed by cavities in Rayney nickel gets smaller the vacuum fluctuations and therefore any matter diffused therough them twist on the time axis trading spatial parameters for temporal but maintaining the same quadric volume.

    Worldchanging: Bright Green 2009

  • Identify and sketch the quadric surface given by z 0. 1 4

    Recently Uploaded Slideshows guest6e0f410 2009

  • Identify the quadric surface given by z. 4 16 (a) Elliptic cone (b) Elliptic paraboloid (c) Hyperbolic paraboloid

    Recently Uploaded Slideshows guest6e0f410 2009

  • Identify the quadric surface sketched at the right. z (a) Hyperboloid of two sheets (b) Elliptic paraboloid 2 − 4 (c)

    Recently Uploaded Slideshows guest6e0f410 2009

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