Found 2 items, similar to Quadric.
English → English (WordNet) Definition: quadric quadric n : a curve or surface whose equation (in Cartesian coordinates) is of the second degree [syn: quadric surface]
English → English (gcide) Definition: Quadric Quadric \Quad"ric\, a. (Math.) Of or pertaining to the second degree. [1913 Webster] Quadric \Quad"ric\, n. (a) (Alg.) A quantic of the second degree. See Quantic. (b) (Geom.) A surface whose equation in three variables is of the second degree. Spheres, spheroids, ellipsoids, paraboloids, hyperboloids, also cones and cylinders with circular bases, are quadrics. [1913 Webster]