(noun) the aggregation of a country's military aircraft. Synonyms: air power.
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Noun Definition 1
(noun) the operation of aircraft to provide transportation.
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Noun Definition 2
(noun) the art of operating aircraft. Synonyms: airmanship.
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Noun Definition 3
(noun) travel via aircraft. Synonyms: air travel, air. Examples: "Air travel involves too much waiting in airports." "If you've time to spare go by air."