quadric

[ kwod-rik ]

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.

quadric

/ ˈkwɒdrɪk /

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

Word History and Origins

Origin of quadric¹

First recorded in 1855–60; quadr- + -ic

Example Sentences

Now from a quadric equation we derive, in like manner, the notion of a complex or imaginary number such as is spoken of above.

From Project Gutenberg

Consider first a numerical quadric equation with imaginary coefficients.

From Project Gutenberg

Evidently the method gives for L a quadric equation, which is the “resolvent” equation in this particular case.

From Project Gutenberg

If a line moves so that it always cuts three given lines of which no two meet, then it generates a ruled quadric surface.

From Project Gutenberg

Each ray cuts its corresponding plane in a point, the locus of these points is a quadric surface.

From Project Gutenberg