Definition of polychroic in English:

polychroic

Pronunciation /ˌpɒlɪˈkrəʊɪk/

adjective

rare
  • Multicoloured; (in Crystallography and Mineralogy) = "pleochroic".

Origin

Mid 19th century; earliest use found in Louis Legrand Noble (1813–1882). From ancient Greek πολύχροος + -ic.