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  1. Dictionary
    colour
    /ˈkʌlə/

    noun

    • 1. the property possessed by an object of producing different sensations on the eye as a result of the way it reflects or emits light: "the lights flickered and changed colour" Similar hueshadetinttone
    • 2. pigmentation of the skin, especially as an indication of someone's ethnicity: "discrimination on the basis of colour" Similar skin colourskin colouringskin tonecomplexion

    verb

    More definitions, origin and scrabble points

  2. Learn the meaning of colour as a noun, adjective, and verb in English, with synonyms, idioms, and pronunciation. See how colour can refer to appearance, interest, race, symbol, and more.

  3. Learn the various meanings and uses of the word color, from a phenomenon of light to a character or quality. See synonyms, examples, etymology, and related words for color.

  4. Learn the meaning, pronunciation, synonyms, and usage of the word 'colour' in British and American English. See examples, phrases, and related words for 'colour'.

    • Overview
    • The nature of colour
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    colour, the aspect of any object that may be described in terms of hue, lightness, and saturation. In physics, colour is associated specifically with electromagnetic radiation of a certain range of wavelengths visible to the human eye. Radiation of such wavelengths constitutes that portion of the electromagnetic spectrum known as the visible spectrum—i.e., light.

    Vision is obviously involved in the perception of colour. A person can see in dim light, however, without being able to distinguish colours. Only when more light is present do colours appear. Light of some critical intensity, therefore, is also necessary for colour perception. Finally, the manner in which the brain responds to visual stimuli must also be considered. Even under identical conditions, the same object may appear red to one observer and orange to another. Clearly, the perception of colour depends on vision, light, and individual interpretation, and an understanding of colour involves physics, physiology, and psychology.

    An object appears coloured because of the way it interacts with light. The analysis of this interaction and the factors that determine it are the concerns of the physics of colour. The physiology of colour involves the eye’s and the brain’s responses to light and the sensory data they produce. The psychology of colour is invoked when the mind processes visual data, compares it with information stored in memory, and interprets it as colour.

    This article concentrates on the physics of colour. For an overview of the primary colours, with their basic secondary and tertiary mixtures, usefully notated as the 12 segments of a circle, see colour wheel. For a discussion of colour as a quality of light, see light and electromagnetic radiation. For the physiological aspects of colour vision, see eye: Colour vision. See also painting for a discussion of the psychological and aesthetic uses of colour.

    Britannica Quiz

    More Art and Colors Quiz

    Aristotle viewed colour to be the product of a mixture of white and black, and this was the prevailing belief until 1666, when Isaac Newton’s prism experiments provided the scientific basis for the understanding of colour. Newton showed that a prism could break up white light into a range of colours, which he called the spectrum (see figure), and that the recombination of these spectral colours re-created the white light. Although he recognized that the spectrum was continuous, Newton used the seven colour names red, orange, yellow, green, blue, indigo, and violet for segments of the spectrum by analogy with the seven notes of the musical scale.

    Newton realized that colours other than those in the spectral sequence do exist, but he noted that

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    all the colours in the universe which are made by light, and depend not on the power of imagination, are either the colours of homogeneal lights [i.e., spectral colours], or compounded of these.

    Newton also recognized that

    Color is the aspect of any object that may be described in terms of hue, lightness, and saturation. Learn how color depends on vision, light, and individual interpretation, and how it is analyzed and classified by physics.

    • Kurt Nassau
  5. Learn the meaning of color as a noun, verb, and adjective in American English, and see how it differs from colour in British English. Find out how to use color in sentences, phrases, and expressions with examples from the Cambridge English Corpus.

  6. a substance, such as a dye, pigment, or paint, that imparts colour to something. the skin complexion of a person, esp as determined by his race. ( as modifier ) colour problem. colour prejudice. the use of all the hues in painting as distinct from composition, form, and light and shade.

  7. The meaning of COLOUR is chiefly British spelling of color.