Source : Webster's Revised Unabridged Dictionary (1913)

Polychromic \Pol`y*chro"mic\, a. [Poly- + (sense 1) Gr. ?, or
   (sense 2) chromic.]
   1. Polychromatic.

   2. (Chem.) Pertaining to, or designating, any one of several
      acids (known only in their salts) which contain more than
      one atom of chromium.

Source : WordNet®

polychromic
     adj : having or exhibiting many colors [syn: {polychromatic}, {polychrome}]