Definitions

from The Century Dictionary.

  • Noting any one of a series of acids each member of which contains in its molecule two atoms of hydrogen and six of oxygen, with a number of sulphur atoms varying from two to six: as dithionic acid, H2S2O6, and tetrathionic acid, H2S4O6.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Of or pertaining to polythionic acid or its derivatives

Etymologies

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Examples

  • The explanation was that the oxidation of sulphite to sulphuric acid does not proceed directly, but by the precipitation of elementary sulphur, which would indicate that this reaction does not proceed monomolecularly, but probably by way of a polythionic acid.

    Fritz Pregl - Nobel Lecture

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