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automatic

adjective (INDEPENDENT)
 
 
/ˌɔː.təˈmæt.ɪk/ US  /ˌɑː.t̬əˈmæt̬-/

Definition

B2 An automatic machine or device is able to operate independently of human control: automatic doors an automatic rifle automatic focus on a cameraMechanical engineering
(Definition of automatic adjective (INDEPENDENT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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