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Definition of cardinal noun from the Oxford Advanced American Dictionary

     

    cardinal

     noun
    noun
    NAmE//ˈkɑrdnəl//
     
    , NAmE//ˈkɑrdn̩əl//
     
     
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  1. 1a priest of the highest rank in the Roman Catholic Church. Cardinals elect and advise the pope Cardinal O'Connor
  2. 2a N. American bird. The male cardinal is bright red.
  3. 3(also cardinal number) a number, such as 1, 2, and 3, used to show quantity rather than order compare ordinal
See the Oxford Advanced Learner's Dictionary entry: cardinal