Definition of miasma noun from the Oxford Advanced American Dictionary

     

    miasma

     noun
    noun
    NAmE//maɪˈæzmə//
     
    , NAmE//miˈæzmə//
     
    [countable, usually singular, uncountable](literary)
     
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  1. 1a mass of air that is dirty and smells unpleasant A miasma of stale alcohol and cigarettes hung around him.
  2. 2(figurative) the miasma of depression
See the Oxford Advanced Learner's Dictionary entry: miasma