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Alkaline

a.
  1. Of or pertaining to an alkali or to alkalies; having the properties of an alkali.
    2. Alkaline earths ,
    certain substances, as lime, baryta, strontia, and magnesia, possessing some of the qualities of alkalies.
    Alkaline metals ,
    potassium, sodium, cæsium, lithium, rubidium.
    Alkaline reaction ,
    a reaction indicating alkalinity, as by the action on limits, turmeric, etc.