The Collaborative International Dictionary of English v.0.48:

aerial \aerial\, Aerial \A*["e]"ri*al\, a. [L. a["e]rius. See
   Air.]
   1. Of or pertaining to the air, or atmosphere; inhabiting or
      frequenting the air; produced by or found in the air;
      performed in the air; as, a["e]rial regions or currents;
      the a["e]rial maneuvers of a fighter plane. "A["e]rial
      spirits." --Milton. "A["e]rial voyages." --Darwin.
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   2. Consisting of air; resembling, or partaking of the nature
      of air. Hence: Unsubstantial; unreal.
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   3. Rising aloft in air; high; lofty; as, a["e]rial spires.
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   4. Growing, forming, living, or existing in the air, as
      opposed to growing or existing in earth or water, or
      underground; as, a["e]rial rootlets, a["e]rial plants; the
      aerial roots of a philodendron. --Gray.
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   5. Light as air; ethereal.
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   6. operating or operated overhead especially on elevated
      cables. aerial conveyers for transporting raw materials
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   7. operating or moving in the air. an aerial cable car;
      aerial combat
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   Aerial acid, carbonic acid. [Obs.] --Ure.

   Aerial perspective. See Perspective.
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