/ Dictionary / Index I iodism: Meaning and Definition of Find definitions for: i•o•dism Pronunciation: (ī'u-diz"um), [key] — n. Pathol. poisoning caused by sensitivity to or overuse of iodine or its compounds. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. iodine 131 iodize Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language