\Met`al*log"ra*phy\, n. [L. metallum metal +
-graphy: cf. F. m['e]tallographie.]
1. The science or art of metals and metal working; also, a
   treatise on metals.
2. A method of transferring impressions of the grain of wood
   to metallic surfaces by chemical action. --Knight.
3. A substitute for lithography, in which metallic plates are
   used instead of stone. --Knight.