D defs.my
Entry 3 senses Webster, 1913

airborne

· IPA /ˈɛrbˌɔrn/
01 adj. conveyed by or through air, as dust or pollen; as, a clean room is needed to avoid airborne contaminants.
  1. 1.
    conveyed by or through air, as dust or pollen; as, a clean room is needed to avoid airborne contaminants.
  2. 2.
    in flight; flying; -- said of an airplane.
  3. 3.
    carried directly to the site of battle by aircraft; -- said of combat troops, as, an airborne division.(Mil.)