from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An acid, H2S2O3, formed by replacement of an oxygen atom by a sulfur atom in sulfuric acid, known only in solution or by its salts and esters.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An unstable acid, H2S2O3, formally derived from sulfuric acid by the substitution of a sulfur atom for an oxygen one; it is known only in solution or as its salts and esters, the thiosulfates.
Sorry, no etymologies found.