quadric

American  

[kwod-rik] / ˈkwɒd rɪk /

adjective

1. of the second degree (said especially of functions with more than two variables).

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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 British  

/ ˈkwɒdrɪk /

adjective

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

2. of the second degree

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noun

1. a quadric curve, surface, or function

Etymology

Origin of quadric

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

Example Sentences

Show that quadric surface x2 + y2 + z2 + 2xy + 2xz + 2yz + x + y + z = 0 reduces to two parallel planes.

From Textbooks • Mar. 30, 2016

Figure 2.83 This quadric surface is called an elliptic paraboloid.

From Textbooks • Mar. 30, 2016

For the following exercises, the graph of a quadric surface is given.

From Textbooks • Mar. 30, 2016

Determine the axis of symmetry of the quadric surface.

From Textbooks • Mar. 30, 2016

“We were all trying to solve this quadric the same way, and then I realized we just had to invert the way we were looking at it.”

From "Tradition" by Brendan Kiely