Webster's Revised Unabridged Dictionary · 1913

Aluminum

Aluminum (ȧ*lū*mi*num) , noun

The metallic element forming the 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. Also called aluminium.