ether

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ether diethyl ether ethyl ether petroleum ether vinyl ether

Main Entry: ether
Pronunciation: -thr
Function: noun
1 : a medium that in the wave theory of light permeates all space and transmits transverse waves
2 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