seignete's salt

1 definition found

seignete's salt - Collaborative International Dictionary of English v.0.48 :

  Rochelle \Ro*chelle"\, 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]