Definition of GB abbreviation from the Oxford Advanced Learner's Dictionary

     

    GB

     abbreviation
    abbreviation
     
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  1. 1Great Britain
    BrE BrE//ˌdʒiː ˈbiː//
     
    ; NAmE NAmE//ˌdʒiː ˈbiː//
     
  2. 2 (in writing)gigabytea 750GB hard drive