Definition of marchioness noun from the Oxford Advanced American Dictionary

     

    marchioness

     noun
    noun
    NAmE//ˈmɑrʃənəs//
     
    , NAmE//ˌmɑrʃəˈnɛs//
     
     
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  1. 1a woman who has the rank of a marquess
  2. 2the wife of a marquess the Marchioness of Bath compare marquise
See the Oxford Advanced Learner's Dictionary entry: marchioness