/ Dictionary / Index S sodium iodide: Meaning and Definition of Find definitions for: so'dium i'odide Pronunciation: [key] — Chem. Chem. a colorless or white, crystalline, deliquescent, water-soluble solid, NaI, used chiefly in the manufacture of photographic emulsions, in organic synthesis, and as a disinfectant in veterinary medicine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sodium hyposulfite sodium lactate Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language