/ Dictionary / Index I Iconium: Meaning and Definition of Find definitions for: I•co•ni•um Pronunciation: (ī-kō'nē-um), [key] — n. ancient name of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. iconic icono- Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language