hydrogen bromide(n = noun.substance) - a colorless gas that yields hydrobromic acid in solution with water;
is a kind of bromide

acid hydrogen, acidic hydrogen, bromide, bromide paper, heavy hydrogen, hydrogen, hydrogen atom, hydrogen azide, hydrogen bomb, hydrogen bond, hydrogen carbonate, hydrogen chloride, hydrogen cyanide, hydrogen fluoride, hydrogen iodide, hydrogen ion, hydrogen ion concentration, hydrogen peroxide, hydrogen sulfide, ipratropium bromide, methyl bromide, potassium bromide, potassium hydrogen carbonate, potassium hydrogen tartrate, silver bromide, sodium hydrogen carbonate