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TOEFL BNC: 10661 COCA: 12184
potassium
noun [U] chemistry /pəˈtæsiəm/
  1. a chemical element that is a soft white metal. It is used, combined with other substances, for making soap and fertilizer and its symbol is K.
     Synonyms and related words
    Metals: aluminium, aluminum, barium...
TOEFL BNC: 10661 COCA: 12184
TOEFL BNC: 10661 COCA: 12184

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