quadric
/ˈkwɒdrɪk
/Geometry
adjective
(Of a surface or curve) described by an equation of the second degree.His doctorate was awarded by Leiden in 1870 for a dissertation Homography applied to the theory of quadric surfaces.
noun
A quadric surface or curve.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.
Origin
Mid 19th century: from Latin quadra 'square' + -ic.
- struth
- Struthiomimus
- strut one's stuff
- strutter
- struttingly
- Struve, Otto
- strychnine
- Stryker
- Stryker Armored Vehicle
- Strümpell–Marie
- Sts
- St Sophia
- St Stephen
- St Stephens
- St Stephen's Day
- St Swithin's day
- St Thomas
- St Trinian's
- St-Tropez
- Stuart
- Stuart, Charles Edward
- Stuart, Gilbert Charles
- Stuart, James
- Stuart, Jeb
- Stuart, John