Rochelle saltRo·chelle salt
a colorless crystalline compound, potassium sodium tartrate, KNaCHO4HO, used as a laxative, in baking powders, and, in electronics, as a piezoelectric material
Origin of Rochelle saltafter La Rochelle, France, where discovered
or Ro·chelle salts
Origin of Rochelle saltAfter (La) Rochelle.
(plural Rochelle salts)
- (inorganic chemistry) The double salt potassium sodium tartrate that is used as a cathartic
From La Rochelle in France