dichromacy
1. [ noun ] (medicine,ophthalmology) 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)
Synonyms: dichromatism dichromatopsia dichromia dichromasy
Related terms: color_blindness yellow-blue_color_blindness red-gree_color_blindness
Similar spelling:   dichromasy
  dichromatic
  dichromia
  dichromat
  dichromate
  dichromatism
  diachronic
  disharmony