fluo·​res·​cent | \ flu̇-ˈre-sᵊnt, 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

Instead of covering your whole face with its internal anatomy, try just a quarter of it by outlining your jawbone, teeth and eye socket with fluorescent hues. 24. Devon Abelman, Allure, "27 Last-Minute Halloween Costumes You Can Do With Just Makeup," 10 Oct. 2018 On the outside, the McLaren 6T has a fluorescent orange highlight along the bottom edge of the phone’s frame, and a glossy black finish with a carbon fiber pattern weave under the back glass. Dan Seifert, The Verge, "The most expensive OnePlus phone ever," 11 Dec. 2018 Not only is the action of the play, which unfolds in a fluorescent-lighted warehouse, grotesquely comic in tone, but Mr. Esparza turns Ui-Hitler into a figure of fun (his whiny, nasal voice reminded me of Jerry Lewis). Terry Teachout, WSJ, "‘The Resistible Rise of Arturo Ui’ Review: A Man of Führer Words," 29 Nov. 2018 Two new colors join the bunch, a metallic taupe with a dark gold, glittered tube, and a sparkly, fluorescent pink that's very Glam Barbie. Rachel Nussbaum, Glamour, "Too Faced Is Making a 'Better Than Birthday Sex' Mascara for Its Anniversary," 1 Aug. 2018 In the decades since Langmuir coined the term, the stuff has flourished in TVs, neon signs, fluorescent light, watches and yes, rockets. David Grossman, Popular Mechanics, "Plasma Thrusters Are About To Have Their Moment," 30 Aug. 2018 Each of its 205 rooms has floor-to-ceiling windows and a balcony, which means full-on views of the fluorescent-blue Flores Sea. Sebastian Modak, Condé Nast Traveler, "Why Now Is the Time to Visit Flores, Indonesia," 16 Nov. 2018 Though the royal couple's outfits weren't exactly fluorescent, they were soon handed floral leis to brighten up their looks. Chloe Foussianes, Town & Country, "Meghan Markle Reveals That She's Been Getting Up at 4:30 A.M. to Do Yoga," 19 Oct. 2018 See below for our top picks for each of the three biggest fluorescent color trends: hot green, pink, and orange. Tara Gonzalez, Glamour, "How to Effectively Master Fall's Neon Fashion Trend," 27 Sep. 2018

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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Last Updated

6 Jan 2019

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Time Traveler for fluorescent

The first known use of fluorescent was in 1853

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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, 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

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