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The Collaborative International Dictionary of English v.0.48 (gcide)

Metallic \Me*tal"lic\, a. [L. metallicus, fr. metallum: cf. F.
m['e]tallique. See {Metal}.]
1. Of or pertaining to a metal; of the nature of metal;
resembling metal; as, a metallic appearance; a metallic
alloy.
[1913 Webster]

2. (Chem.) Of, pertaining to, or characterized by, the
essential and implied properties of a metal, as contrasted
with a nonmetal or metalloid; conductive of electricity;
basic; forming positive ions in solution; antacid.
[1913 Webster PJC]

{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.
[1913 Webster]