Definition of quadric in English:

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Pronunciation: /ˈkwädrik/


(Of a surface or curve) described by an equation of the second degree.
Example sentences
  • His doctorate was awarded by Leiden in 1870 for a dissertation Homography applied to the theory of quadric surfaces.


A quadric surface or curve.
Example sentences
  • His work in geometry included a study of conics, quadrics and projective geometry.
  • The equation of the scroll of tangents of the common curve of two quadrics is due to Cayley in 1850.
  • The book contains a wealth of information concerning the projective geometry of conics and quadrics.


Mid 19th century: from Latin quadra 'square' + -ic.

For editors and proofreaders

Syllabification: quad·ric

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