Definition of flyby noun from the Oxford Advanced American Dictionary

     

    flyby

     noun
    noun
    NAmE//ˈflaɪbai//
     
    (pl. flybys)
     
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  1. 1 (also flyover) a special flight by a group of aircraft, for people to watch at an important ceremony
  2. 2the flight of a spacecraft near a planet to record data