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
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In a dark room, even fluorescent lights can help. Karen Brewer Grossman, Southern Living, 13 Mar. 2026 Under the fluorescent lights and produce banners of Seafood City Supermarket, an unlikely dance floor opened for over a thousand Chicagoans Friday night. Chicago Tribune, 10 Mar. 2026 The ceilings, floors, and walls were glaringly white under harsh fluorescent lights; the air was completely still. Jason Liebowitz, New Yorker, 6 Mar. 2026 The restaurant is a no-frills affair, a vacuous space with fluorescent lights and vinyl flooring. Sean Timberlake, Sacbee.com, 6 Mar. 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

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Cite this Entry

“Fluorescent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluorescent. Accessed 18 Mar. 2026.

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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