Rochelle salt

noun Ro·chelle salt \rō-ˈshel-\

Definition of ROCHELLE SALT

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

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La Rochelle, France

First Known Use: 1753

Medical Dictionary

noun Ro·chelle salt \rō-ˈshel-\

: a crystalline salt C₄H₄KNaO₆·4H₂O that is a mild purgative—called also potassium sodium tartrate, Seignette salt, sodium potassium tartrate

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