fluorescent

adjective

fluo·​res·​cent flu̇-ˈre-sᵊnt How to pronounce fluorescent (audio)
flȯ-
1
: having or relating to fluorescence
2
: bright and glowing as a result of fluorescence
fluorescent inks
broadly : very bright in color
fluorescent noun
fluorescently adverb

Examples of fluorescent in a Sentence

Recent Examples on the Web
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.
Although a campfire is still an artificial form of light, the warm yellows and reds of its flames are less disruptive to our wake-sleep cycles than the bright, cool blue lights emitted from computers, TVs, and fluorescent bulbs. Laura Kiniry, Popular Science, 17 Sep. 2025 The floating creatures bloom in fluorescent green swirls that soak up carbon dioxide emitted by factories and power plants all over the world. Zack Savitsky, Quanta Magazine, 15 Sep. 2025 My eyes shrunk to slits, trying to spot the glow sticks that The Medellín Cartel had affixed to their bounty, which slowly lit up the water’s surface like fluorescent fireflies. Martin Suarez, Rolling Stone, 13 Sep. 2025 Until now, most fluorescent glasses for LSCs were made by embedding nanocrystals. Sujita Sinha, Interesting Engineering, 12 Sep. 2025 See All Example Sentences for fluorescent

Word History

First Known Use

1853, in the meaning defined at sense 1

Time Traveler
The first known use of fluorescent was in 1853

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Cite this Entry

“Fluorescent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluorescent. Accessed 22 Sep. 2025.

Kids Definition

fluorescent

adjective
flu·​o·​res·​cent
ˌflu̇(-ə)r-ˈes-ᵊnt
1
: having or relating to fluorescence
2
: very bright in color
fluorescent markers

More from Merriam-Webster on fluorescent

Last Updated: - Updated example sentences
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