Noun aviation has 4 senses
  1. aviation, air power - the aggregation of a country's military aircraft
    --1 is a kind of collection, aggregation, accumulation, assemblage
  2. aviation - the operation of aircraft to provide transportation
    --2 is a kind of
    industry
    Derived form: verb aviate1
  3. aviation, airmanship - the art of operating aircraft
    --3 is a kind of art, artistry, prowess
    Derived form: verb aviate1
  4. air travel, aviation, air - travel via aircraft; "air travel involves too much waiting in airports"; "if you've time to spare go by air"
    --4 is a kind of travel, traveling, travelling
    --4 has particulars: flight, flying
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