American English

Definition of diametrical adjective from the Oxford Advanced American Dictionary

     

    diametrical

     adjective
    adjective
    NAmE//ˌdaɪəˈmɛtrɪkl//
     
    [usually before noun]
     
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  1. 1used to emphasize that people or things are completely different He's the diametrical opposite of his brother.
  2. 2relating to the diameter of something
See the Oxford Advanced Learner's Dictionary entry: diametrical