a crystalline solid having a large piezoelectric effect (electric charge induced on its surfaces by mechanical deformation due to pressure, twisting, ... [2 related articles]
Synonym for potassium sodium tartrate ... 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) ... 
Type: Term Synonyms: potassium sodium tartrate
Rochelle salt (Seignette's salt) is sodium potassium tartrate. It is prepared by saturating a boiling solution of acid potassium tartrate with sodium carbonate and crystallizing. It forms large rhombic crystals which are easily soluble in water. It is used as a reducing agent, in silvering glass and formerly as a diuretic and saline purgative in me...
Potassium sodium tartrate
[n] - a double salt used in Seidlitz powder
Rochelle salts noun a double salt used in Seidlitz powder; acts as a cathartic