polychromatic
1. [ adjective ] (color) having or exhibiting many colors
Synonyms: polychromic polychrome
Related terms: colored
2. [ adjective ] (of light or other electromagnetic radiation) composed of more than one wavelength
Examples:

"polychromatic light"

Related terms: monochromatic
Similar spelling:   polychromic
  polychrome
  polychromize
  polychromise