Color blindness
Color Col"or (k[u^]l"[~e]r), n. [Written also {colour}.] [OF. color, colur, colour, F. couleur, L. color; prob. akin to celare to conceal (the color taken as that which covers). See {Helmet}.] 1. A property depending on the relations of light to the eye, by which individual and specific differences in the hues and tints of objects are apprehended in vision; as, gay colors; sad colors, etc. [1913 Webster]

Note: The sensation of color depends upon a peculiar function of the retina or optic nerve, in consequence of which rays of light produce different effects according to the length of their waves or undulations, waves of a certain length producing the sensation of red, shorter waves green, and those still shorter blue, etc. White, or ordinary, light consists of waves of various lengths so blended as to produce no effect of color, and the color of objects depends upon their power to absorb or reflect a greater or less proportion of the rays which fall upon them. [1913 Webster]

2. Any hue distinguished from white or black. [1913 Webster]

3. The hue or color characteristic of good health and spirits; ruddy complexion. [1913 Webster]

Give color to my pale cheek. --Shak. [1913 Webster]

4. That which is used to give color; a paint; a pigment; as, oil colors or water colors. [1913 Webster]

5. That which covers or hides the real character of anything; semblance; excuse; disguise; appearance. [1913 Webster]

They had let down the boat into the sea, under color as though they would have cast anchors out of the foreship. --Acts xxvii. 30. [1913 Webster]

That he should die is worthy policy; But yet we want a color for his death. --Shak. [1913 Webster]

6. Shade or variety of character; kind; species. [1913 Webster]

Boys and women are for the most part cattle of this color. --Shak. [1913 Webster]

7. A distinguishing badge, as a flag or similar symbol (usually in the plural); as, the colors or color of a ship or regiment; the colors of a race horse (that is, of the cap and jacket worn by the jockey). [1913 Webster]

In the United States each regiment of infantry and artillery has two colors, one national and one regimental. --Farrow. [1913 Webster]

8. (Law) An apparent right; as where the defendant in trespass gave to the plaintiff an appearance of title, by stating his title specially, thus removing the cause from the jury to the court. --Blackstone. [1913 Webster]

Note: Color is express when it is averred in the pleading, and implied when it is implied in the pleading. [1913 Webster]

{Body color}. See under {Body}.

{Color blindness}, total or partial inability to distinguish or recognize colors. See {Daltonism}.

{Complementary color}, one of two colors so related to each other that when blended together they produce white light; -- so called because each color makes up to the other what it lacks to make it white. Artificial or pigment colors, when mixed, produce effects differing from those of the primary colors, in consequence of partial absorption.

{Of color} (as persons, races, etc.), not of the white race; -- commonly meaning, esp. in the United States, of negro blood, pure or mixed.

{Primary colors}, those developed from the solar beam by the prism, viz., red, orange, yellow, green, blue, indigo, and violet, which are reduced by some authors to three, -- red, green, and violet-blue. These three are sometimes called {fundamental colors}.

{Subjective color} or {Accidental color}, a false or spurious color seen in some instances, owing to the persistence of the luminous impression upon the retina, and a gradual change of its character, as where a wheel perfectly white, and with a circumference regularly subdivided, is made to revolve rapidly over a dark object, the teeth of the wheel appear to the eye of different shades of color varying with the rapidity of rotation. See {Accidental colors}, under {Accidental}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Color blindness — Blindness Blind ness, n. State or condition of being blind, literally or figuratively. Darwin. [1913 Webster] {Color blindness}, inability to distinguish certain color. See {Daltonism}. [1913 Webster] …   The Collaborative International Dictionary of English

  • color blindness — 1844, replacing Daltonism (after English chemist John Dalton, 1766 1844, who published a description of it in 1794); in figurative use, with reference to race or ethnicity, attested from 1866, Amer.Eng. Related: color blind …   Etymology dictionary

  • color blindness — color blindness. См. дальтонизм. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Color blindness — Colorblind and Colourblind redirect here. For other uses, see Colorblind (disambiguation). Color blindness or color deficiency Classification and external resources An 1895 illustration of normal vision and various kinds of color blindness …   Wikipedia

  • color blindness — noun genetic inability to distinguish differences in hue • Syn: ↑colour blindness, ↑color vision deficiency, ↑colour vision deficiency • Derivationally related forms: ↑colour blind, ↑color blind • Hypernyms …   Useful english dictionary

  • color blindness — spalvinis aklumas statusas T sritis fizika atitikmenys: angl. color blindness; colour blindness; daltonism vok. Anerythropsie, f; Daltonismus, m; Farbenblindheit, f rus. дальтонизм, m; цветовая слепота, f pranc. achromatopsie, f; anérythropsie,… …   Fizikos terminų žodynas

  • color-blindness — ˈcolour blindness ; (especially US ˈcolor blindness) noun uncountable Main entry: ↑colour blindderived …   Useful english dictionary

  • color blindness — noun a) Any of several medical conditions in which the physical ability to see colors is impaired, especially Achromatopsia, Daltonism. Despite the fact that race is embedded in American social life, color blindness has recently emerged as the… …   Wiktionary

  • color blindness — n achromatopsy, Daltonism, chro mo blindness, Ophthalm. monochromatism; Oph thalm. deuteranopia, green blindness; Ophthalm. pro tanopia, red blindness; Ophthalm. tritanopia, blue blindness, yellow blindness …   A Note on the Style of the synonym finder

  • color blindness — Synonyms and related words: Christmas disease, Daltonism, Hartnup disease, Werdnig Hoffmann disease, achromatic vision, achromatopsia, albinism, cystic fibrosis, deuteranopia, dichromatic vision, dichromatism, dysautonomia, green blindness,… …   Moby Thesaurus

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