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.
Until now, most fluorescent glasses for LSCs were made by embedding nanocrystals. Sujita Sinha, Interesting Engineering, 12 Sep. 2025 The ensuite bathroom was a bit fluorescent and barracks-like but was stocked with all the necessities, CO Bigelow-style. Julia Harrison, Architectural Digest, 10 Sep. 2025 Just look at how fluorescent accessories defined 1990s rave culture in the UK, or how Daft Punk’s metallic helmets spawned a movement of futuristic style. Nadja Sayej, Forbes.com, 9 Sep. 2025 Men sleeping head-to-toe on a crowded floor, exhausted detainees blocking out fluorescent lights with face masks, and dozens of people using cardboard boxes as mattresses. Isabelle Chapman, CNN Money, 8 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 14 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

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