Source : Webster's Revised Unabridged Dictionary (1913)

AEther \[AE]"ther\, n.
   See {Ether}.

Source : WordNet®

Aether
     n 1: personification of the sky or upper air breathed by the
          Olympians; son of Erebus and Night or of Chaos and
          Darkness
     2: a medium that was once supposed to fill all space and to
        support the propagation of electromagnetic waves [syn: {ether}]