of the second degree (said especially of functions with more than two variables).
a quadric function.
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-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for quadric
Historical Examples of quadric
Every plane section of a quadric surface is a conic or a line-pair.
Instead of a circle or sphere we may take any conic or quadric.
Now from a quadric equation we derive, in like manner, the notion of a complex or imaginary number such as is spoken of above.
Evidently the method gives for L a quadric equation, which is the “resolvent” equation in this particular case.
Each ray cuts its corresponding plane in a point, the locus of these points is a quadric surface.
British Dictionary definitions for quadric
having or characterized by an equation of the second degree, usually in two or three variables
of the second degree
a quadric curve, surface, or function
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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