| Polychromate | n. [ See Polychromic. ] (Chem.) A salt of a polychromic acid. [ 1913 Webster ] |
| Polychromate | 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. [ 1913 Webster ] |