dichromatism

== English == === Etymology === From di- +‎ chromatism. === Noun === dichromatism (countable and uncountable, plural dichromatisms) The condition of being dichromatic (pathology) A form of colourblindness in which only two of the three primary colours can be distinguished (biology) The condition when male and female birds have different plumage colors. ==== Derived terms ==== sexual dichromatism ==== Related terms ==== monochromatism dichromatism trichromatism