/ Dictionary / Index I Ithunn: Meaning and Definition of Find definitions for: I•thunn Pronunciation: (ē'oon), [key] — n. Idun. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ithunn (Thesaurus) Ithome ithyphallic Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language