(1):
(a.) Light as air; ethereal.
(2):
(a.) Growing, forming, or existing in the air, as opposed to growing or existing in earth or water, or underground; as, aerial rootlets, aerial plants.
(3):
(a.) Rising aloft in air; high; lofty; as, aerial spires.
(4):
(a.) Consisting of air; resembling, or partaking of the nature of air. Hence: Unsubstantial; unreal.
(5):
(a.) 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, aerial regions or currents.