• (a.) Pertaining to, or designating, any one of several acids (known only in their salts) which contain more than one atom of chromium. • (a.) Polychromatic. Found on http://thinkexist.com/dictionary/meaning/polychromic/
Pol`y·chro'mic adjective [ Poly- + (sense 1) Greek ..., or (sense 2) chromic .] 1. Polychromatic. 2. (Chemistry) Pertaining to, or designating, any one of several acids (known only in their salts) which contain more than one atom of chromium. Found on http://www.encyclo.co.uk/webster/P/120