/ Dictionary / Index I Ionia: Meaning and Definition of Find definitions for: I•o•ni•a Pronunciation: (ī-ō'nē-u), [key] — n. an ancient region on the W coast of Asia Minor and on adjacent islands in the Aegean: colonized by the ancient Greeks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ionia (Thesaurus) ion generator Ionian Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language