1) Color 2) Color blindness 3) Color vision deficiency 4) Colour blindness 5) Colour vision deficiency 6) Dichromacy 7) Dichromasy 8) Dichromatopsia 9) Dichromia 1) Dichromacy 2) Dichromasy 3) Dichromatopsia 4) Dichromia 
Color differences between individuals of the same species.
Dichromatism (or polychromatism) is a phenomenon where a material or solution`s hue is dependent on both the concentration of the absorbing substance and the depth or thickness of the medium traversed. In most substances which are not dichromatic, only the brightness and saturation of the colour depend on their concentration and layer thickness. ....
• (n.) The state of being dichromatic.
(di-kro´mә-tiz-әm) the quality of existing in or exhibiting two different colors. dichromatic vision.
Di·chro'ma·tism noun The state of being dichromatic. 
Type: Term Pronunciation: dī-krō′mă-tizm Definitions: 1. The state of being dichromatic (1). 2. The abnormality of color vision in which only two of the three retinal cone pigments are present, as in protanopia, deuteranopia, and tritanopia. Synonyms: dichromatopsia
individuals have one of two distinct plumage color types. See dimorphism.
The normal occurrence of two different colourations in the same species due to neither sex or age.
the quality or state of being dichromatic. · Also calleda defect of vision in which the retina responds to only two of the three primary colors. Cf. monochromatism (def. 2),(def. 3).