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quadric

[kwod-rik]Mathematics
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adjective
  1. of the second degree (said especially of functions with more than two variables).
noun
  1. a quadric function.
  2. a surface such as an ellipsoid or paraboloid as defined by a second-degree equation in three real variables.

Origin of quadric

First recorded in 1855–60; quadr- + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for quadric

quadric

adjective
  1. having or characterized by an equation of the second degree, usually in two or three variables
  2. of the second degree
noun
  1. a quadric curve, surface, or function
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