/ Dictionary / Index I -ior: Meaning and Definition of Find definitions for: -ior Pronunciation: [key] a suffix of comparatives appearing in words of Latin origin: superior; ulterior; junior. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. I.O.O.F. Ioshkar-Ola Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language