Hy`po*sul"phur*ous (?), a. [Pref. hypo- + sulphurous.] Chem.

Pertaining to, or containing, sulphur, all, or a part, in a low state of oxidation.

Hyposulphurous acid. (a) Thiosulphuric acid. [Obs.] (b) An acid, H2SO2, obtained by the reduction of sulphurous acid. It is not obtained in the free state, but in an orange-yellow water solution, which is a strong reducing and bleaching agent. Called also hydrosulphurous acid.


© Webster 1913.

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