The meaning of Quadrics and additional information.

Quadric(a.) Of or pertaining to the second degree.

Quadric(n.) A quantic of the second degree. See Quantic.

Quadric(n.) 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.