Definition of Ethionic
1. a. Pertaining to, derived from, or designating, an acid so called.
Medical Definition of Ethionic
Pertaining to, derived from, or designating, an acid so called.
Ethionic acid, a liquid derivative of ethylsulphuric and sulphuric (thionic) acids, obtained by the action of sulphur trioxide on absolute alcohol.
Origin: Ethyl + thionic.
Source: Websters Dictionary
(01 Mar 1998)
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