brightness
Americannoun
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the quality of being bright.
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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.
noun
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the condition of being bright
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physics a former name for luminosity
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psychol the experienced intensity of light
Etymology
Origin of brightness
before 950; Middle English brihtnes, Old English beorhtnes. See bright, -ness
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Then in 2016, its brightness dropped sharply in less than a year.
From Science Daily
A remarkable new image from NASA's Hubble Space Telescope highlights a striking mix of brightness and shadow inside the Egg Nebula.
From Science Daily
Fluorescence imaging offers a possible solution, but current labeling techniques often face problems such as fading signals, leaking dyes, or reduced brightness in complex biological environments.
From Science Daily
The gloves are weathered and white, their brightness dulled by the decades, with the brand name “reusch” across the knuckles and a big, plum-colored sun on top.
From Los Angeles Times
Without interference from air and sky brightness, Swift's Ultraviolet/Optical Telescope can reach a sensitivity comparable to a 4 meter class ground telescope at those wavelengths.
From Science Daily
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
