Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A white crystalline compound, Na2S2O3, often prepared as a white translucent crystalline pentahydrate, used as a photographic fixing agent, as a bleach and antichlor, and as an antidote for cyanide poisoning.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a compound used as a fixing agent in photographic developing
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