fluo·​res·​cent | \ flu̇-ˈre-sᵊnt How to pronounce fluorescent (audio) , flȯ- \

Definition of fluorescent

1 : having or relating to fluorescence
2 : bright and glowing as a result of fluorescence fluorescent inks broadly : very bright in color

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Other Words from fluorescent

fluorescent noun
fluorescently adverb

Examples of fluorescent in a Sentence

Recent Examples on the Web Here is a trio of young people who used the internet to its highest exploratory potential, and found one another — and then flourished, reveling in an unfinished but fluorescent version of themselves. New York Times, 19 Aug. 2021 Using a fluorescent version of L-DOPA that shows up on PET scans, the researchers were able to observe that within a few weeks, all of the patients had recovered the ability to convert it to dopamine. Megan Molteni, STAT, 12 July 2021 Lopez performed in all her glamorous glory, rocking a jeweled, fluorescent yellow outfit with knee-high black boots while masked dancers backed her up. Thuc Nhi Nguyen Staff Writer, Los Angeles Times, 7 May 2021 The unapologetically bright and fluorescent lifestyle and design company comes from Joy Cho — the mastermind behind it all. Linh Ta, Better Homes & Gardens, 6 May 2021 Once poured into the glass, the Ultraviolet sparkling rosé is fluorescent pink in color; ultraviolet feels like an apt description. Esther Mobley, San Francisco Chronicle, 10 Feb. 2021 And that lavender with the red hair was almost fluorescent. Erica Gonzales, Harper's BAZAAR, 10 Dec. 2020 The particles, which were highly fluorescent, were tracked with laser sensors so the researchers could see their movement. Popular Science, 21 Oct. 2020 The hairstylists and makeup artists have also shown us a couple of different ways to style a bun, as well as a fun, fluorescent way to disguise dark circles à la Blumarine. Devon Abelman, Allure, 24 Sep. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fluorescent.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of fluorescent

1853, in the meaning defined at sense 1

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Time Traveler for fluorescent

Time Traveler

The first known use of fluorescent was in 1853

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Dictionary Entries Near fluorescent



fluorescent brightener

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Last Updated

1 Sep 2021

Cite this Entry

“Fluorescent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluorescent. Accessed 22 Oct. 2021.

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More Definitions for fluorescent



English Language Learners Definition of fluorescent

: producing light when electricity flows through a tube that is filled with a type of gas
: very bright


fluo·​res·​cent | \ flu̇-ˈre-sᵊnt How to pronounce fluorescent (audio) , flō- \

Kids Definition of fluorescent

1 : giving out visible light when exposed to external radiation a fluorescent substance a fluorescent coating
2 : producing visible light by means of a fluorescent coating a fluorescent bulb
3 : extremely bright or glowing fluorescent colors

More from Merriam-Webster on fluorescent

Nglish: Translation of fluorescent for Spanish Speakers


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