as in brightness
the quality or state of having or giving off light
the luminosity of the fireflies made for an enchanting nighttime show
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Recent Examples of luminosity
That’s because some four billion years ago, our sun had only about 70 percent of its current luminosity.
—
Bruce Dorminey, Forbes, 20 Oct. 2024
One is directly, by observing 'standard candles' — that is, objects with predictable luminosities such as Cepheid variables, type Ia supernova explosions, and red giant stars — in galaxies and determining how far away they are based on the apparent brightness of these standard candles.
—Keith Cooper, Space.com, 22 Jan. 2025
The interaction between these two stars incites a fierce reaction that will massively increase the luminosity of the star system for a brief amount of time.
—Jack Knudson, Discover Magazine, 6 Jan. 2025
Because of that design, the luminosity of precise areas of the headlight can be limited while the overall brightness is pushed up, up, up.
—Peter Rubin, Longreads, 5 Dec. 2024
See All Example Sentences for luminosity
Bruce Dorminey, Forbes, 20 Oct. 2024
One is directly, by observing 'standard candles' — that is, objects with predictable luminosities such as Cepheid variables, type Ia supernova explosions, and red giant stars — in galaxies and determining how far away they are based on the apparent brightness of these standard candles.
—Keith Cooper, Space.com, 22 Jan. 2025
The interaction between these two stars incites a fierce reaction that will massively increase the luminosity of the star system for a brief amount of time.
—Jack Knudson, Discover Magazine, 6 Jan. 2025
Because of that design, the luminosity of precise areas of the headlight can be limited while the overall brightness is pushed up, up, up.
—Peter Rubin, Longreads, 5 Dec. 2024
See All Example Sentences for luminosity
Recent Examples of Synonyms for luminosity
Noun
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The low-profile scissor keys feel nice to type on, and there's a convenient shortcut row for functions like volume, screen brightness, emoji, and more.—
Julian Chokkattu,
WIRED,
28 Feb. 2025
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The golden yellow hue injects energy and brightness to entryways, kitchens, and social spaces, and layering it with the cool, crisp white hue makes for a fresh and airy color scheme perfect for spring.—
Maria Sabella,
Better Homes & Gardens,
21 Feb. 2025
Noun
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Family circles will have wrapped themselves in the holy pleasures of the great occasion, and everywhere the grand old holiday will have been introduced with all the majesty and brilliancy which clings around the hallowed name of Christmas.—
Michael Barnes,
Austin American-Statesman,
23 Dec. 2024
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The Red Planet, shining at magnitude –1.4, is 40° to the east-northeast, and the king of planets, Jove, still near its greatest brilliancy for the year at magnitude –2.8, lies 46° west-southwest of Luna.—
Michael E. Bakich,
Discover Magazine,
7 Nov. 2022
Noun
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Fellow Broward County native Jordan Lyle showed flashes of brilliance as a freshman last year, rushing for 400 yards and four touchdowns on 54 carries.—
Adam Lichtenstein,
Sun Sentinel,
4 Mar. 2025
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Male competition, the divine mystery of creative brilliance, the fickleness of popularity: All play a part in Amadeus, although that shouldn’t discount how funny this film is, too.—
Will Leitch,
Vulture,
3 Mar. 2025
Noun
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Reliable comedic turns from Rick Hoffman's hapless Louis and Sarah Rafferty's fierce Donna brought a lightness to the show and rounded out the ensemble.—
Eliana Dockterman,
TIME,
23 Feb. 2025
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The record will explore the question of magic in all of its unexpected manifestations, even the ones that aren’t typically described with the lightness of the world, like grief.—
Larisha Paul,
Rolling Stone,
19 Feb. 2025
Cite this Entry
“Luminosity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/luminosity. Accessed 10 Mar. 2025.
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