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sodium thiosulfate

noun

Definition of sodium thiosulfate

: a hygroscopic crystalline salt Na2S2O3 used especially as a photographic fixing agent and a reducing or bleaching agent

— called also fixer, hypo

First Known Use of sodium thiosulfate

1885, in the meaning defined above

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More Definitions for sodium thiosulfate

sodium thiosulfate

noun

Medical Definition of sodium thiosulfate

: a hygroscopic crystalline salt Na2O3S2 that is used as a fixing agent in photography, as a reducing agent and bleaching agent, in chemical analysis for the titration of iodine, and in medicine as an antidote in poisoning especially by cyanides and as an antifungal agent

— called also hypo, sodium hyposulfite

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