English word ethionic acid comes from English ethyl, English thionic
| Dictionary entry | Language | Definition |
|---|---|---|
| ethyl | English (eng) | (organic chemistry) The univalent hydrocarbon radical, C2H5, formally derived from ethane by the loss of a hydrogen atom. |
| thionic | English (eng) | |
| ethionic acid | English (eng) | (chemistry) A liquid derivative of ethylsulphuric acid and sulphuric acid, obtained by the action of sulphur trioxide on absolute alcohol. |