from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A person who can distinguish only two primary colors

from The Century Dictionary and Cyclopedia

  • n. One who possesses only two of the three normal primary color-sensations; a red-blind or green-blind person. The term presupposes the correctness of the Young-Helmholtz theory of color-vision.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a person with any of the various forms of dichromacy


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