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

      

    automatic

     noun
    noun
    BrE BrE//ˌɔːtəˈmætɪk//
     
    ; NAmE NAmE//ˌɔːtəˈmætɪk//
     
    Types of vehicle, Weapons
     
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  1. 1 a gun that can fire bullets continuously as long as the trigger is pressed See related entries: Weapons
  2. 2 (British English) a car with a system of gears that operates without direct action from the driver compare stick shift See related entries: Types of vehicle
  3. Word Origin mid 18th cent.: from Greek automatos ‘acting of itself’, from autos ‘self’. + -ic.
See the Oxford Advanced American Dictionary entry: automatic