{Metallic iron}, iron in the state of the metal, as distinquished from its ores, as magnetic iron. {Metallic paper}, paper covered with a thin solution of lime, whiting, and size. When written upon with a pewter or brass pencil, the lines can hardly be effaced. {Metallic tinking} (Med.), a sound heard in the chest, when a cavity communicating with the air passages contains both air and liquid.