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.
Conventional diamond quantum sensors measure fluorescent light that is emitted by these defects. — Georgina Jedikovska, Interesting Engineering, 22 Oct. 2026 Early Tuesday morning, workers used a crane to remove a giant fluorescent yellow vest draped over the statue at the center of the square, then used pressure washers to blast graffiti off the monument. — Tom Nouvian, Los Angeles Times, 20 Oct. 2026 The highlight was a cluster of rough diamonds, some of them glowing fluorescent blue, a color straight from Earth’s vast palette. — Samantha Conti, Footwear News, 19 Oct. 2026 Drawing on economics and game theory, and using tools that range from fluorescent quantum dots to imaging robots, her lab is probing how fungi and plants conduct their trade. — Quanta Magazine, 15 Oct. 2026 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

Phrases Containing fluorescent

Rhymes for fluorescent

See All Rhymes for fluorescent

Browse Nearby Words

fluorescence
fluorescent
fluorescent brightener
See all Nearby Words

Cite this Entry

“Fluorescent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluorescent. Accessed 27 Oct. 2026.

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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
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