Definition of polychromatism in English:

polychromatism

Pronunciation /-ˈkrōməˌtizəm/

noun

See polychromatic

‘The maintenance of female polychromatism in the damselfly Ischnura graellsii is addressed by reanalysing data from two natural populations.’
  • ‘Stephens concluded that the two forms may have resulted from selected polychromatism facilitated by the somewhat insular nature of the Cape San Lucas area.’