The Collaborative International Dictionary of English v.0.48:

Metallurgist \Met"al*lur`gist\, n. [Cf. F. m['e]tallurgiste.]
   One who works in metals, or prepares them for use; one who is
   skilled in metallurgy.
   [1913 Webster]

WordNet (r) 3.0 (2006):

metallurgist
    n 1: an engineer trained in the extraction and refining and
         alloying and fabrication of metals [syn: metallurgist,
         metallurgical engineer]