/ Dictionary / Index S sodium bromide: Meaning and Definition of Find definitions for: so'dium bro'mide Pronunciation: [key] — Chem. Chem. a white, crystalline, hygroscopic, water-soluble solid, NaBr, used chiefly in photography as a developer, and in medicine as a sedative. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sodium borate sodium butabarbital Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language