Rochelle salt

noun
Ro·chelle salt | \rō-ˈshel- \

Definition of Rochelle salt 

: a crystalline salt KNaC4H4O6·4H2O that is a mild purgative

First Known Use of Rochelle salt

1712, in the meaning defined above

History and Etymology for Rochelle salt

La Rochelle, France

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The first known use of Rochelle salt was in 1712

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Rochelle salt

noun
Ro·chelle salt | \rō-ˈshel- \

Medical Definition of Rochelle salt 

: a crystalline salt C4H4KNaO6·4H2O that is a mild purgative

called also potassium sodium tartrate, Seignette salt, sodium potassium tartrate

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