/ Dictionary / Index F fractionize: Meaning and Definition of Find definitions for: frac•tion•ize Pronunciation: (frak'shu-nīz"), [key] — -ized, -iz•ing. to divide into fractions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fractionator fractious Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language