Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

sodium thiosulfate

noun

Definition of sodium thiosulfate

  1. :  a hygroscopic crystalline salt Na2S2O3 used especially as a photographic fixing agent and a reducing or bleaching agent —called also fixer, hypo



1885

First Known Use of sodium thiosulfate

1885


Medical Dictionary

sodium thiosulfate

noun

Medical Definition of sodium thiosulfate

  1. :  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




Learn More about sodium thiosulfate


Seen and Heard

What made you want to look up sodium thiosulfate? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

looking or feeling very sad

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

dog-eating-apple

Which is a synonym of asperse?

beat divulge placate defame
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ