/ Dictionary / Index Q quadratic form: Meaning and Definition of Find definitions for: quadrat'ic form' Pronunciation: [key] — Math. Math. a polynomial all of whose terms are of degree 2 in two or more variables, as 5x − 2xy + 3y. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. quadratic equation quadratic formula Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language