from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Possessing or exhibiting two colors.
  • adj. Zoology Having two distinct color phases not associated with season, sex, or age, as do certain species of birds.
  • adj. Pathology Of or relating to dichromatism.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having two colors.
  • adj. having a form of colorblindness in which only two of the three primary colors can be distinguished
  • adj. having two independent channels for conveying color information in the eye.
  • adj. occurring or existing in two different ornamentations or colors, typically as a form of sexual dimorphism.
  • adj. having two hues, either of which may be visible depending on both the concentration of the absorbing substance and the depth or thickness of the medium traversed, such as in pumpkin seed oil. A form of polychromatism.
  • adj. exhibiting dichroism; dichroic.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having or exhibiting two colors.
  • adj. Having two color varieties, or two phases differing in color, independently of age or sex, as in certain birds and insects.

from The Century Dictionary and Cyclopedia

  • Having or producing two colors; exhibiting or characterized by dichromatism. Also dichroic and bichromatic.

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

  • adj. having two colors
  • adj. of or relating to dichromatism


from Wiktionary, Creative Commons Attribution/Share-Alike License

di- + Ancient Greek χρῶμα (khroma, "color").


  • All the males of most species, and many of the females, are dichromatic, meaning they only have two kinds of cone cells.

    Drunk On Color

  • Nikon D300, 600 mm lens, 1.4 extender, ISO 640, f/13, 1/640 sec Question: This dichromatic Ethiopian mystery bird is a very rare vagrant to western Europe.

    Mystery bird: Pied wheatear, Oenanthe pleschanka

  • This species is strongly dichromatic, meaning that the males and females have distinctive plumage colours and patterns -- a characteristic that distinguishes it from the monochromatic Cyprus pied wheatear, Oenanthe cypriaca, with which it was formerly considered to be conspecific.

    Mystery bird: Pied wheatear, Oenanthe pleschanka

  • No, in his somber dichromatic uniform, he seemed as plain as you or I.


  • ‘Code is Law’ provides a false dichromatic descriptive of a very colourful subject.

    The Volokh Conspiracy » Lessig’s “Code” at 10:

  • He often accompany her to sit on the balcony, a chess, black and white and dichromatic attack, defense, row, universal, she gradually lost the game.

  • Beamsplitters acting as edge filters are often referred to as dichroic or dichromatic mirrors.


  • The Nikon Fluorescence Microscopy Digital Image Gallery - The widefield reflected light fluorescence microscope has been a fundamental tool for the examination of fluorescently labeled cells and tissues since the introduction of the dichromatic mirror in the late 1940s.


  • Brightness, saturation, and hue in normal and dichromatic vision.

    PLoS ONE Alerts: New Articles

  • These new units are dichromatic, which means that they emit essentially only two colors (blue and yellow) which fools our eyes (more or less, depending on the color of the items reflecting that light) into thinking they see full-spectrum light.

    Home Theater Forum


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