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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
“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


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
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Word History and Origins

Origin of quadric1

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

Consider first a numerical quadric equation with imaginary coefficients.

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

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

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

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