| rochelle | A seaport town in France. Rochelle powders. Same as Seidlitz powders. <chemistry> Rochelle salt, the double tartrate of sodium and potassium, a white crystalline substance. It has a cooling, saline, slightly bitter taste and is employed as a mild purgative. It was discovered by Seignette, an apothecary of Rochelle, and is called also Seignete's salt. Source: Websters Dictionary (01 Mar 1998) |
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| Rochelle salt | 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) |