A*lu"mi*num (#), 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, pertaining a specific gravity of about 2.6. Atomic weight 27.08. Symbol Al.

Aluminum bronze or gold, a pale gold-colored alloy of aluminum and copper, used for journal bearings, etc.


© Webster 1913.