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: the attribute of light-source colors by which emitted light is ordered continuously from light to dark in correlation with its intensity compare hue sense 2c, lightness entry 1 sense 2a, saturation sense 4
Examples of brightness in a Sentence
the brightness of the sunshine made me squint after an afternoon spent in a darkened movie theater
Recent Examples on the Web
Both cameras capture good detail and color (for a tablet) without overdoing the brightness.
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PC Magazine, 21 May 2025
Other steps to help reduce damage include face masks or glasses made to shield blue light, or just simply lowering the brightness of your phone.
—Joshua Rapp Learn, Discover Magazine, 21 May 2025
The screen itself is a 3.3K dual-layer OLED affair rated for peak brightness of 1,600 nits.
—Abhimanyu Ghoshal, New Atlas, 20 May 2025
Adjust your screen brightness: Use your device's settings to match the screen brightness to the room's lighting.
—Sarah Bence, Health, 19 May 2025
See All Example Sentences for brightness
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PC Magazine, 21 May 2025
Other steps to help reduce damage include face masks or glasses made to shield blue light, or just simply lowering the brightness of your phone.
—Joshua Rapp Learn, Discover Magazine, 21 May 2025
The screen itself is a 3.3K dual-layer OLED affair rated for peak brightness of 1,600 nits.
—Abhimanyu Ghoshal, New Atlas, 20 May 2025
Adjust your screen brightness: Use your device's settings to match the screen brightness to the room's lighting.
—Sarah Bence, Health, 19 May 2025
See All Example Sentences for brightness
Cite this Entry
“Brightness.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brightness. Accessed 2 Jun. 2025.
Copy CitationMedical Definition
brightness
noun
bright·ness
ˈbrīt-nəs 
: the one of the three psychological dimensions of color perception by which visual stimuli are ordered continuously from light to dark and which is correlated with light intensity compare hue, saturation sense 4a
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