hexocyclium methylsulfate
noun
hexo·cy·cli·um me·thyl·sul·fate
variants:
or British hexocyclium methylsulphate \ -ˈsī-klē-əm-ˌmeth-əl-ˈsəl-ˌfāt 
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Medical Definition of hexocyclium methylsulfate
: a white crystalline anticholinergic agent C21H36N2O5S that tends to suppress gastric secretion and has been used in the treatment of peptic ulcers