See Also: ethionic(medicine)
ethionic(dictionary)

Muschelkalk (iou) and ethionic (iou)


Muschelkalk (iou)



Muschelkalk noun. M19.
[German, lit. 'shelly limestone', from Muschel MUSSEL + Kalk CHALK noun.]
Geology. (The limestone of) the Middle Triassic in Europe, esp. Germany.

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.