Hydromagnesite :: Hydromagnesite (n.) A hydrous carbonate of magnesia occurring in white, early, amorphous masses..
Nitromagnesite :: Nitromagnesite (n.) Nitrate of magnesium, a saline efflorescence closely resembling nitrate of calcium..
Pyromagnetic :: Pyromagnetic (a.) Acting by the agency of heat and magnetism; as, a pyromagnetic machine for producing electric currents..