metallography

/M EH0 T AH0 L AA1 G R AH0 F IY0/
noun
  1. 1

    The study of the structure of metals and their alloys, by any of a variety of techniques

  2. 2

    A process for utilising metal plates in a manner similar to lithographic stones.

  3. 3

    A process of imitating the grain of wood on metals.

Source: https://en.wiktionary.org/wiki/metallography