aluminum

alu·mi·num

noun, often attrib \ə-ˈlü-mə-nəm\

Definition of ALUMINUM

: 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—symbol Al; see element table