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1. Dictionary

   Bright·ness

   /ˈbrītnəs/

   

   noun

   • 1. the quality or state of giving out or reflecting light: "we can change the brightness of the bulb"
   • ▪ the quality or state of being well lit: "his mother called to him from the brightness of the kitchen"
   • ▪ sunny, cloudless weather: "the brightness will linger through Wednesday"
   • ▪ the quality of being vividly and boldly colored: "he adds brightness to the dishes by tossing in fresh herbs"
   • 2. the quality of being intelligent and quick-witted: "he reminded me of my first son with his brightness and inquisitiveness"
   • 3. the quality of being cheerful or lively: "there's so much light and brightness in their faces"
   • ▪ success and happiness: "there had been some brightness in her life"
   • 4. the quality in sound of being clear, vibrant, and typically high-pitched: "tone alters the brightness of the sound"

   Scrabble Points: 16

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2. support.microsoft.com › en-us › windowsChange screen brightness in Windows - Microsoft Support

   support.microsoft.com › en-us › windows

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   Change screen brightness in Windows. Select the Network icon on the right side of the taskbar, and then move the Brightness slider to adjust the brightness. (If the slider isn't there, see the Notes section below.)

3. dictionary.cambridge.org › english › brightnessBRIGHTNESS | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › english › brightness

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   BRIGHTNESS meaning: 1. the quality of shining with, or of producing, a lot of light: 2. the quality of having very…. Learn more.

4. www.dictionary.com › browse › brightness'BRIGHTNESS Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › brightness'

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   the luminance of a body, apart from its hue or saturation, that an observer uses to determine the comparative luminance of another body. Pure white has the maximum brightness, and pure black the minimum brightness.

5. www.collinsdictionary.com › english › brightnessBRIGHTNESS definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › english › brightness

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   4 days ago · 1. the quality of being bright. 2. Optics. the luminance of a body, apart from its hue or saturation, that an observer uses to determine the comparative luminance of another body. Pure white has the maximum brightness, and pure black the minimum brightness. Most material © 2005, 1997, 1991 by Penguin Random House LLC.

6. www.oxfordlearnersdictionaries.com › brightnessbrightness noun - Definition, pictures, pronunciation and ...

   www.oxfordlearnersdictionaries.com › brightness

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   a cheerful and lively attitude or way of behaving. Her brightness and energy kept us all together. the quality of being intelligent and quick to learn. The brightness of these students isn't in doubt. Check pronunciation: brightness. Definition of brightness noun in Oxford Advanced Learner's Dictionary.

7. en.wikipedia.org › wiki › LuminosityLuminosity - Wikipedia

   en.wikipedia.org › wiki › Luminosity

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   Luminosity is an absolute measure of radiated electromagnetic energy (light) per unit time, and is synonymous with the radiant power emitted by a light-emitting object. In astronomy, luminosity is the total amount of electromagnetic energy emitted per unit of time by a star, galaxy, or other astronomical objects.

8. www.oed.com › dictionary › brightness_nbrightness, n. meanings, etymology and more | Oxford English ...

   www.oed.com › dictionary › brightness_n

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   There are 11 meanings listed in OED's entry for the noun brightness. See ‘Meaning & use’ for definitions, usage, and quotation evidence.