n. [ Trade name, fr. kainite. ] Salts of potassium used in the manufacture of fertilizers. [ 1913 Webster ]
n. [ Gr. &unr_; recent. ] (Min.) A compound salt consisting chiefly of potassium chloride and magnesium sulphate, occurring at the Stassfurt salt mines in Prussian Saxony. [ 1913 Webster ]