GNU Collaborative International Dictionary of English

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1.       
   Rochelle (?), n. A seaport town in France.
   
   [1913 Webster]
   
   Rochelle powders. Same as Seidlitz powders. -- Rochelle salt (Chem.), 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.
   
   [1913 Webster]