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Noun: alkali metal  'al-ku,lI'me-t(u)l
  1. Any of the monovalent metals of group I of the periodic table (lithium, sodium, potassium, rubidium, caesium or francium)
    "the hydroxides of the alkali metals are strongly alkaline";
    - alkaline metal

Derived forms: alkali metals

Type of: metal, metallic element

Encyclopedia: Alkali metal