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Definition of Rochelle salt
1. Noun. A double salt used in Seidlitz powder; acts as a cathartic.
Definition of Rochelle salt
1. Noun. (inorganic compound) The double salt potassium sodium tartrate that is used as a cathartic ¹
¹ Source: wiktionary.com
Medical Definition of Rochelle salt
1. KNaC4H4O6;a mild saline cathartic, used as an ingredient in compound effervescent powders. Synonym: Rochelle salt, Seignette's salt, sodium potassium tartrate. (05 Mar 2000)