See Also: ethionic(medicine)
ethionic(dictionary)

ethionic (iou)



ethionic adjective. M19.
[from ETHER noun1 + THIONIC.]
Chemistry. ethionic acid, an acid, HO3SC2H4OSO3H, known only in solution and obtained by the action of water on ethionic anhydride; ethionic anhydride, a crystalline cyclic compound, C2H4S2O6, formed by the action of sulphur trioxide on ethylene or ethanol.