Also known as dichromatopsia, dyschromatopsia, and parachromatopsia. The term dichroma-tism comes from the Greek words dis (twice) and chroma (colour). It refers to a type of *colour vision deficiency in which one of the three colour receptor mechanisms is missing. Dichromatism is absolute, due to the absence of one type of retinal cone pigment. In trichromatic species such as humans there are three types of dichro-matism, called *protanopia, *deuteranopia, and *tritanopia. The term dichromatism is used in opposition to the terms *monochromatism and *anomalous trichromatism.
   Hsia, Y., Graham, C.H. (1965). Color blindness. In: Vision and visual perception.Editedby Graham, C.H. New York, NY: John Wiley & Sons.
   McIntyre, D. (2002). Colour blindness. Causesand effects. Chester: Dalton Publishing.

Dictionary of Hallucinations. . 2010.

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  • Dichromatism — Di*chro ma*tism, n. The state of being dichromatic. [1913 Webster] …   The Collaborative International Dictionary of English

  • dichromatism — [dī krō′mə tiz΄əm] n. 1. the quality or condition of being dichromatic 2. color blindness in which a person can see only two of the three primary colors (red, green, and blue) 3. DICHROISM …   English World dictionary

  • Dichromatism — For colour blindness, see Dichromacy. Dichromatism (or polychromatism) is a phenomenon where the hue of the colour in materials or solutions are dependent on both the concentration of the absorbing substance and the depth or thickness of the… …   Wikipedia

  • dichromatism — dichromatizmas statusas T sritis fizika atitikmenys: angl. dichromatism vok. Dichromatismus, m rus. дихроматизм, m pranc. dichromatisme, m …   Fizikos terminų žodynas

  • dichromatism — noun Date: circa 1901 partial color blindness in which only two colors are perceptible …   New Collegiate Dictionary

  • dichromatism — /duy kroh meuh tiz euhm/, n. 1. the quality or state of being dichromatic. 2. Also called dichromatopsia /duy kroh meuh top see euh/. Ophthalm. a defect of vision in which the retina responds to only two of the three primary colors. Cf.… …   Universalium

  • dichromatism — noun a) The condition of being dichromatic b) A form of colourblindness in which only two of the three primary colours can be distingished …   Wiktionary

  • dichromatism — 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. SYN …   Medical dictionary

  • dichromatism — n. being of two colors; form of color blindness (also dichromatopsia) …   English contemporary dictionary

  • dichromatism — [dʌɪ krəʊmətɪz(ə)m] noun 1》 the occurrence of two different kinds of colouring, especially in an animal species. 2》 colour blindness in which only two of the three primary colours can be discerned. Derivatives dichromatic adjective …   English new terms dictionary