POTASH

potash. Potash, n. a fixed alkali obtained from the ashes of plants

---

Pot″ash′ (?), n. [[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).