ethionic

Eth`i*on"ic, a. Etym: [Ethyl + thionic.] (Chem.) Defn: Pertaining to, derived from, or designating, an acid so called. Ethionic acid (Chem.), a liquid derivative of ethylsulphuric and sulphuric (thionic) acids, obtained by the action of sulphur trioxide on absolute alcohol.

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