Pearlash

1 definition found

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

  Pearlash \Pearl"ash`\, n. (Chem.)
     A white amorphous or granular substance which consists
     principally of potassium carbonate, and has a strong alkaline
     reaction. It is obtained by lixiviating wood ashes, and
     evaporating the lye, and has been an important source of
     potassium compounds. It is used in making soap, glass, etc.


     [1913 Webster]