See Also: methonium(dictionary)
methonium compounds(medicine)

methonium (iou)



methonium noun. M20.
[from METH- + -ONIUM.]
Pharmacology. Any of various (salts of) polymethylene bistrimethylammonium cations, [(CH3)3N(CH2)xN(CH3)3]2+, some of which are ganglionic blocking agents used to treat hypertension. Chiefly in methonium compound.