'hydrogen bromide' definitions:

Definition of 'hydrogen bromide'

From: WordNet
noun
A colorless gas that yields hydrobromic acid in solution with water

Definition of 'hydrogen bromide'

From: GCIDE
  • Hydrobromic \Hy`dro*bro"mic\, a. [Hydro-, 2 + bromic.] (Chem.) Composed of hydrogen and bromine; as, hydrobromic acid. [1913 Webster]
  • Hydrobromic acid (Chem.), a colorless, pungent, corrosive gas, HBr, usually collected as a solution in water. It resembles hydrochloric acid, but is weaker and less stable. Called also hydrogen bromide. [1913 Webster]