polychromate
Pol`y*chro"mate, n. Etym: [See Polychromic.] (Chem.) Defn: A salt of a polychromic acid. Pol`y*chro"mate, n. Etym: [See Polychromatic.] (Chem.) Defn: A compound which exhibits, or from which may be prepared, a variety of colors, as certain solutions derived from vegetables, which display colors by fluorescence.