aether
noun(ether)
a medium that in the wave theory of light permeates all space and transmits transverse waves
aether
noun(ether)
a light volatile flammable liquid C4H10O used especially formerly chiefly as an anesthetic —called also diethyl ether, ethyl ether, ethyl oxide
aether
noun(ether)
any of various organic compounds characterized by an oxygen atom attached to two carbon atoms