a colourless pungent gas used in organic synthesis. Formula: HBr
2.
an aqueous solution of hydrogen bromide; hydrobromic acid
hydrogen bromide in American English
noun
a colorless gas, HBr, having a pungent odor: the anhydride of hydrobromic acid
Word origin
[1895–1900]This word is first recorded in the period 1895–1900. Other words that entered Englishat around the same time include: backwind, cutback, flamenco, hit-and-run, slapstick