dichromatism

Plural: dichromatisms

Noun

• a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision)
• The condition of being dichromatic
• A form of colourblindness in which only two of the three primary colours can be distinguished
• The condition when male and female birds have different plumage colors.

Synonyms

dichromacy, dichromasy, dichromatopsia, dichromia

Related Words

monochromatism, trichromatism