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

Examples from the Web for quadric

Historical Examples of quadric

British Dictionary definitions for quadric


  1. having or characterized by an equation of the second degree, usually in two or three variables
  2. of the second degree
  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