Main Entry: alu·mi·num

Pronunciation: \ə-ˈlü-mə-nəm\

Function: noun

Usage: often attributive

Etymology: New Latin, from alumina

Date: 1812

: a bluish silver-white malleable ductile light trivalent metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation and is the most abundant metal in the earth's crust where it always occurs in combination — see element table