| Quadric 1. (a.) Of or pertaining to the second degree. 2. (n.) A quantic of the second degree. See Quantic. 3. (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. Thesaurus Entries aboveboard, authentic, biquadratic, bona fide, cube-shaped, cubed, cubic, cubiform, cuboid, diced, fair and square, four, four-legged, four-rayed, genuine, good-faith, oblong, on the level, on the square, on the up-and-up, open, open and aboveboard, orthogonal, quadrangular, quadrate, quadratic, quadric, quadriform, quadrilateral, quadrinomial, quadrivalent, quadruped, quartic, quartile, quaternary, rectangular, rhombic, rhomboid, single-hearted, square, square-dealing, square-shooting, straight, straight-shooting, tetractinal, tetrad, tetragonal, tetrahedral, tetravalent, trapezohedral, trapezoid, up-and-up, veritable |