noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The quality of having two independent channels for conveying color information in the eye. uncountable
2. 2
   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) wordnet

Synonyms

All synonyms

dichromasydichromatismdichromatopsiadichromia

Etymology

di- + Ancient Greek χρῶμα (khrôma, “color”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.