/ Dictionary / Index D dualize: Meaning and Definition of Find definitions for: du•al•ize Pronunciation: (d'u-līz", dy'-), [key] — -ized, -iz•ing. to make dual. to regard as dual. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. duality principle Dual Monarchy Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language