A vision condition where a person can see only two of the three primary colors, representing a form of color blindness.
From Greek 'dicha' (two) and 'chroma' (color), plus the medical suffix '-asia' (condition of). This clinical term describes a specific type of color vision deficiency.
People with dichromasia live in a fundamentally different visual world than the rest of us—red-green colorblindness (the most common type) means traffic lights look identical, which is why some countries use different shapes along with colors.
Complete word intelligence in one call. Free tier — 50 lookups/day.