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potash noun

  /ˈpɑt.æʃ/ , /ˈpɒt.æʃ/
  • The water-soluble part of the ash formed by burning plant material; used for making soap and glass and as a fertilizer.
  • (chemistry) An impure form of potassium carbonate (K2CO3) mixed with other potassium salts.
 potaska
caustic potash
kaustinen potaska
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