pentathionic acid

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penta- +‎ thionic + acid, since it contains five atoms of sulphur.


pentathionic acid (uncountable)

  1. (chemistry) An acid of sulphur obtained by leading hydrogen sulphide into a solution of sulphur dioxide.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.