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English definition of “aviation”

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aviation

noun [U] uk   /ˌeɪ.viˈeɪ.ʃən/ us  
the activity of flying aircraft, or of designing, producing, and keeping them in good condition: the British Civil Aviation Authority the US Federal Aviation Administration aviation fuel
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(Definition of aviation from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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