Definition of dichromatism in English:

dichromatism

noun

  • 1(typically in an animal species) the occurrence of two different kinds of colouring.

    • ‘Extrapair paternity has been reported to be strongly positively associated with sexual dichromatism.’
    • ‘One of the most conspicuous ornamental traits in avian sexual dichromatism is carotenoid-based plumage coloration.’
    • ‘Sex of each chick at six weeks of age was recorded, when sexual plumage dichromatism became unambiguous.’
    • ‘In no case did we find a significant interaction between sexual dichromatism and year.’
    • ‘Collection of the goldfinches took place when plumage dichromatism between males and females is subtle.’
  • 2Colour blindness in which only two of the three primary colours can be discerned.

Pronunciation:

dichromatism

/dʌɪˈkrəʊmətɪz(ə)m/