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Noun: alkali (alkalis,alkalies)  'al-ku,lI
  1. Any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water
    "alkalis include oxides and hydroxides of metals and ammonia";
    - base
     
  2. A mixture of soluble salts found in arid soils and some bodies of water; detrimental to agriculture

Derived forms: alkalies, alkalis

Type of: chemical compound, compound, salt

Encyclopedia: Alkali