/ Dictionary / Index U unisize: Meaning and Definition of Find definitions for: u•ni•size Pronunciation: (y'nu-sīz"), [key] made to fit all sizes, types, weights, etc., within the ordinary range: unisize swimming trunks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. unisexual unison Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language