Source : Webster's Revised Unabridged Dictionary (1913)

Orientalist \O`ri*en"tal*ist\, n. [Cf. F. orientaliste.]
   1. An inhabitant of the Eastern parts of the world; an
      Oriental.

   2. One versed in Eastern languages, literature, etc.; as, the
      Paris Congress of Orientalists. --Sir J. Shore.

Source : WordNet®

orientalist
     n : a specialist in oriental subjects