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Definition of alkaline adjective from the Oxford Advanced American Dictionary

     

    alkaline

     adjective
    adjective
    NAmE//ˈælkələn//
     
    , NAmE//‑ˌlaɪn//
     
     
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  1. 1(chemistry) having the nature of an alkali
  2. 2(technology) containing alkali alkaline soil compare acid
See the Oxford Advanced Learner's Dictionary entry: alkaline