Medical Dictionary


noun \ˈē-thər\

Medical Definition of ETHER

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