Source : Webster's Revised Unabridged Dictionary (1913)

Polychromate \Pol`y*chro"mate\, n. [See {Polychromic}.] (Chem.)
   A salt of a polychromic acid.

Polychromate \Pol`y*chro"mate\, n. [See {Polychromatic}.]
   (Chem.)
   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.