%polychromic%

a. [ Poly- + (sense 1) Gr. &unr_;, or (sense 2) chromic. ] 1. Polychromatic. [ 1913 Webster ]

2. (Chem.) Pertaining to, or designating, any one of several acids (known only in their salts) which contain more than one atom of chromium. [ 1913 Webster ]