Source : Webster's Revised Unabridged Dictionary (1913)

Occidental \Oc`ci*den"tal\, a. [L. occidentalis; cf. F.
   occidental.]
   1. Of, pertaining to, or situated in, the occident, or west;
      western; -- opposed to {oriental}; as, occidental
      climates, or customs; an occidental planet.

   2. Possessing inferior hardness, brilliancy, or beauty; --
      used of inferior precious stones and gems, because those
      found in the Orient are generally superior.

Source : WordNet®

Occidental
     n 1: a native inhabitant of the Occident
     2: an artificial language