Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An unstable acid, H2S2O4, that is found chiefly in the form of its salts and is used as a bleaching and reducing agent.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry the unstable acid, H2S2O4, known only as its
derivatives , thedithionites
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[di– + Greek theion, sulfur + –ous.]
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