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 And that lavender with the red hair was almost fluorescent. Erica Gonzales, Harper's BAZAAR, "The Undoing's Costume Designer Weighs in on Those Infamous Coats, Once and for All," 10 Dec. 2020 The particles, which were highly fluorescent, were tracked with laser sensors so the researchers could see their movement. Popular Science, "COVID-19 continues to make flying a risky proposition," 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, "The Best Hair and Makeup Moments From Milan Fashion Week," 24 Sep. 2020 Use compact fluorescent lightbulbs (CFLs) rather than incandescent lightbulbs that use more energy and emit heat. oregonlive, "10 easy ways to stay cool at home this summer," 5 June 2020 The current method for grading and classifying syrups involves trained human taste testers who are very rarely augmented in high-tech industrial settings with fluorescent spectroscopy. Jennifer Ouellette, Ars Technica, "Artificial “tongue” for maple syrup weeds out batches with “buddy” off flavors," 28 May 2020 Life-protecting pressurized suits have changed, too: The new flight’s two astronauts, NASA veterans Robert Behnken and Douglas Hurley, will not wear the fluorescent orange ensembles of the space shuttle era. Irene Klotz, Scientific American, "Back in Business: NASA Is Set to Return to Human Spaceflight with Historic SpaceX Launch," 27 May 2020 These days, the lights on 42nd street are a fluorescent memory, but there is still hope. Perri Ormont Blumberg, Southern Living, "6 Feel-Good Broadway Musicals to Stream Right Now," 13 May 2020 In the approach scientists like Dr. Nardell describe, fixtures mounted on walls or ceilings, similar to fluorescent lights used today, shine ultraviolet light across the top of an interior space, well above people’s heads. Kenneth Chang, New York Times, "Scientists Consider Indoor Ultraviolet Light to Zap Coronavirus in the Air," 7 May 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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Statistics for fluorescent

Last Updated

17 Dec 2020

Cite this Entry

“Fluorescent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluorescent. Accessed 20 Jan. 2021.

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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

More from Merriam-Webster on fluorescent

Nglish: Translation of fluorescent for Spanish Speakers

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