Source : Webster's Revised Unabridged Dictionary (1913)

Metallography \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.