Definition of hydrogen sulphate in US English:

hydrogen sulphate

(US hydrogen sulfate)

noun

Chemistry
  • (Frequently as one word) an acid salt containing the anion HSO₄ −, or the anion itself; an ester of the type RHSO₄.

Origin

Mid 19th century; earliest use found in Henry Roscoe (1833–1915), chemist and university administrator.