/ Dictionary / Index Q quadrature of the circle: Meaning and Definition of Find definitions for: quad'rature of the cir'cle Pronunciation: [key] — Math. Math. the insoluble problem of constructing, by the methods of Euclidean geometry, a square equal in area to a given circle. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. quadrature quadrel Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language