/ Dictionary / Index Q quadratics: Meaning and Definition of Find definitions for: quad•rat•ics Pronunciation: (kwo-drat'iks), [key] — n. (used with a sing. v.) the branch of algebra that deals with quadratic equations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: quadratics (Thesaurus) quadratic residue quadrature Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language