Potash

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Potash \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).
         [1913 Webster]

From WordNet (r) 2.0 [wn]:

  potash
       n : a potassium compound often used in agriculture and industry
           [syn: {caustic potash}, {potassium hydroxide}]