Category:Potash

Pot"ash`, n. Etym: [pot + ash.] (chem.) (a) the hydroxide of potassium hydrate, a hard white brittle Substance, koh, having strong caustic and alkaline properties; -- Hence called also caustic potash. (b) the impure potassium carbonate obtained by leaching wood ashes, Either as a strong solution (lye), or as a white crystalline (pearlash).