Definition of primacy noun from the Oxford Advanced Learner's Dictionary

      

    primacy

     noun
    noun
    BrE BrE//ˈpraɪməsi//
     
    ; NAmE NAmE//ˈpraɪməsi//
     
    (pl. primacies)(formal)
     
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  1. 1[uncountable] the fact of being the most important person or thing a belief in the primacy of the family This college emphasizes the primacy of teaching over research. This approach gives primacy to facts.
  2. 2[countable] the position of an archbishop
  3. Word Origin late Middle English: from Old French primatie, from medieval Latin primatia, from Latin primas, primat- ‘of the first rank’, from primus ‘first’.
See the Oxford Advanced American Dictionary entry: primacy