metallurgy
Met"al*lur`gy, n. Etym: [F. métallurgie, fr. L. metallum metal, Gr. Metal, and Work.] Defn: The art of working metals, comprehending the whole process of separating them from other matters in the ore, smelting, refining, and parting them; sometimes, in a narrower sense, only the process of extracting metals from their ores.