v.i.,v.t. square; agree; make to agree; n. & a., square; oblong; Astronomy, distant 90° from each other. quadratic, a. square; applied to algebraic expression containing square but no higher power of unknown quantity; n. such equation. quadratics, n. algebra dealing with quadratic equations. quadrature, n. problem or act of finding square with area equal of another known figure; act of determining areas; Astronomy, relation of quadrate heavenly bodies.