ALUMINIUM

Al′u‐min″i‐um (ăl′ū̍‐mĭn″ĭ‐ŭm), n. [[L. alumen. See Alum.]] (Chem.) The metallic base of alumina. This metal is white, but with a bluish tinge, and is remarkable for its resistance to oxidation, and for its lightness, having a specific gravity of about 2.6. Atomic weight 27.08. Symbol Al. Aluminium bronze or gold, a pale gold-colored alloy of aluminium and copper, used for journal bearings, etc.