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 In the fluorescent light, the cashier, Paige Painter, who regularly served Brittany, noticed her tangled hair, ripped nails, and scratched face. Elizabeth Flock, The New Yorker, "How Far Can Abused Women Go to Protect Themselves?," 13 Jan. 2020 The lighting in the long basement room is harsh and fluorescent. Alex Delany, Bon Appétit, "My Favorite Sausage in NYC Is Served at a Ukrainian Joint Under a Chiropractor’s Office," 10 Jan. 2020 Brooks Running has an entire Nightlife collection, which features a fluorescent color that is easy to spot on the road and trails. Jean Chen Smith, Cincinnati.com, "2019/2020 winter running guide: How to stay warm, safe and healthy," 29 Nov. 2019 Butler was a fireplug of man, with glasses and a thick neck, wearing a sharply creased dress white uniform that seemed to almost gleam under the courtroom’s fluorescent lights. T. Christian Miller, ProPublica, "The Navy installed touch-screen steering systems to save money.," 20 Dec. 2019 However, The New York Times reported that the Trump administration earlier this month proposed to change a requirement that would have forced light bulbs to be either fluorescent or LED to meet energy efficiency standards. James Burky, The Denver Post, "Colorado children, activists to stage rallies across state as part of youth-led Global Climate Strike," 19 Sep. 2019 To solve that problem, Jaklenec and her bioengineering colleagues have devised a way to deliver a vaccine through a microneedle patch that simultaneously embeds in the skin a pattern of fluorescent nanocrystals about the vaccination itself. Elizabeth Cooney, STAT, "Experimental vaccine patch embeds invisible dots under the skin, leaving record of immunization," 18 Dec. 2019 For our meeting, Dailey was led into the tiny, fluorescent-lit room where final interviews with the condemned are conducted. Pamela Colloff, ProPublica, "He’s a Liar, a Con Artist and a Snitch. His Testimony Could Soon Send a Man to His Death.," 4 Dec. 2019 Housed in the Heinz History Center museum, the archive consists of shelves upon shelves of boxes under fluorescent lighting. Ben Sales, sun-sentinel.com, "Preserving Pittsburgh mementos has become a labor of remembrance," 29 Oct. 2019

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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Statistics for fluorescent

Last Updated

20 Jan 2020

Cite this Entry

“Fluorescent.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/fluorescents. Accessed 28 January 2020.

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More Definitions for fluorescent


How to pronounce fluorescent (audio)

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

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More from Merriam-Webster on fluorescent

Rhyming Dictionary: Words that rhyme with fluorescent

Spanish Central: Translation of fluorescent

Nglish: Translation of fluorescent for Spanish Speakers

Comments on fluorescent

What made you want to look up fluorescent? Please tell us where you read or heard it (including the quote, if possible).


showing steady, earnest care and effort

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