Any of a class of elements that generally are solid at ordinary temperatures, have a grayish color and a shiny surface, and will conduct heat and electricity:

In a pure electrolytic solution, a metal will form positive ions.

Metals constitute about three-fourths of the known elements and can form alloys with each other and with nonmetals.

Common metals include copper, gold, silver, tin, iron, lead, aluminum, and magnesium.

An alloy is a mixture composed of the previously listed-common metals.