1
2
: 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
On those nights, the moon will be at 40% brightness, which may interfere with viewing, according to the American Meteor Society.
—
Janet Loehrke, USA Today, 19 Apr. 2025
In our test, which involves playing a YouTube video on a loop with the screen at full brightness, the phone lasted 16 hours and 6 minutes on a single charge.
—PC Magazine, 17 Apr. 2025
The lamp has a matte-gold finish, provides optimal brightness, and will look perfect on your work desk.
—Nora Colomer, FOXNews.com, 17 Apr. 2025
Mango, lime, mint, and avocado add brightness and varied textures to the carrots ensuring every bite is full of flavor.
—Alana Al-Hatlani, Southern Living, 16 Apr. 2025
See All Example Sentences for brightness
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Janet Loehrke, USA Today, 19 Apr. 2025
In our test, which involves playing a YouTube video on a loop with the screen at full brightness, the phone lasted 16 hours and 6 minutes on a single charge.
—PC Magazine, 17 Apr. 2025
The lamp has a matte-gold finish, provides optimal brightness, and will look perfect on your work desk.
—Nora Colomer, FOXNews.com, 17 Apr. 2025
Mango, lime, mint, and avocado add brightness and varied textures to the carrots ensuring every bite is full of flavor.
—Alana Al-Hatlani, Southern Living, 16 Apr. 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 22 Apr. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share