n (Firearms, Gunnery, Ordnance & Artillery) trademark a mixture of aluminium powder and a metal oxide, such as iron oxide, which when ignited reacts with the evolution of heat to yield aluminium oxide and molten metal: used for welding and in some types of incendiary bombs
Ther•mit
(ˈθɜr mɪt) Trademark. a brand name for thermite. Translationstermite