[‚mä·nō‚meth·əl ′hī·drə‚zēn] (chemistry) CH3N2H3 A volatile toxic liquid that will react with carbon dioxide and oxygen.
monomethylhydrazine
mon·o·meth·yl·hy·dra·zine
(mon-ō-meth'il-hī-drah-zēn), A volatile toxin found in some mushrooms, an inhibitor of GABA synthesis that can cause seizures; also antagonizes pyridoxine.