thioarsenate

noun
thio·arsenate | \¦thī(ˌ)ō+\

Definition of thioarsenate 

: a salt (as sodium thioarsenate Na3AsS4) or ester containing pentavalent arsenic and sulfur in the acid portion of the molecule and obtainable from arsenic pentasulfide

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History and Etymology for thioarsenate

International Scientific Vocabulary thi- + arsenate

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