Define the word H2SO3"H2SO3" gcide "The Collaborative International Dictionary of English v.0.48"
Sulphurous \Sul"phur*ous\, a. [L. sulphurosus, sulfurosus: cf.
F. sulfureux.]
1. Of or pertaining to sulphur.
[1913 Webster]
2. (Chem.)
(a) Derived from, or containing, sulphur; specifically,
designating those compounds in which the element has a
lower valence as contrasted with the sulphuric
compounds.
(b) Having the characteristic odor of sulphur dioxide, or
of hydrogen sulphide, or of other sulphur compounds.
[1913 Webster]
Sulphurous acid.
(a) Sulphur dioxide. See under Sulphur. [Obs.]
(b) An acid, H2SO3, not known in the free state except
as a solution of sulphur dioxide in water, but forming
a well-known series of salts (the sulphites).
Sulphurous anhydride (Chem.), sulphur dioxide. See under
Sulphur.
[1913 Webster]
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