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.-consisting of air; resembling, or partaking of the nature of air. hence: unsubstantial; unreal.-rising aloft in air; high; lofty; as, aerial spires.-growing, forming, or existing in the air, as opposed to growing or existing in earth or water, or underground; as, aerial rootlets, aerial plants.-light as air; ethereal.