Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Alternative spelling of pyrosulfuric.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to, or designating, an acid called also disulphuric acid) obtained by distillation of certain sulphates, as a colorless, thick, oily liquid, H2S2O7 resembling sulphuric acid. It is used in the solution of indigo, in the manufacture of alizarin, and in dehydration.

from The Century Dictionary and Cyclopedia

  • Obtained from sulphuric acid by the action of heat.

Etymologies

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