Definition of imperial adjective from the Oxford Advanced American Dictionary

     

    imperial

     adjective
    adjective
    NAmE//ɪmˈpɪriəl//
     
    [only before noun]
     
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  1. 1connected with an empire the imperial family/palace/army imperial power/expansion
  2. 2connected with the system for measuring length, weight, and volume using pounds, inches, etc. compare metric
See the Oxford Advanced Learner's Dictionary entry: imperial