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

Herders have resorted to painting the reindeer antlers in fluorescent colors to reduce their traffic deaths. Fox News, "Reindeer accident hospitalizes 12 Finnish soldiers in Lapland," 11 Sep. 2019 Then there’s Saint Laurent, where a battalion of black-and-white pieces were interspersed with gabardine mini-dresses and feathered tube dresses in fluorescent tangerine. Adam Tschorn, Los Angeles Times, "Bold and bright and available now: shopping the fall and winter 2019 women’s trends," 6 Sep. 2019 Hasty has long studied how to engineer various periodic actions into bacteria, including making E. coli pulse with fluorescent light. San Diego Union-Tribune, "From rock/paper/scissors to new cancer-fighting concept from UCSD scientists," 6 Sep. 2019 The fluorescent glare of the overhead lights continued day and night, troubling their sleep. Azam Ahmed, New York Times, "Women Are Fleeing Death at Home. The U.S. Wants to Keep Them Out.," 18 Aug. 2019 Sporting a cropped monochromatic custom PHLEMUNS red suit, the 20-year-old rapper stood solo on the Time’s cover with a fluorescent background. Nandi Howard, Essence, "Here's What Lil Nax X Wore On The Cover Of Time Magazine," 15 Aug. 2019 Researchers at Pablo de Olavide University in Spain created this time lapse of a developing fruit fly larva under a confocal microscope, each cell illuminated by a fluorescent protein. Scientific American, "Test Pilot Geese, Planetary Wrecking Balls and Super AI Vision: The Week’s Best Science GIFs," 6 Sep. 2019 Glowing green The most famous mechanism for biofluorescence is green fluorescent protein (GFP). Jennifer Ouellette, Ars Technica, "We now know what causes these two shark species to glow green," 8 Aug. 2019 Most animals that use biofluorescence rely on molecules known as green fluorescent proteins (GFPs), which have since been adopted for use in the biomedical industry as handy ways to track genes in experiments. Brian Clark Howard, National Geographic, "These sharks glow underwater—thanks to tiny ‘lightsabers’," 8 Aug. 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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Statistics for fluorescent

Last Updated

13 Oct 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 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

Rhyming Dictionary: Words that rhyme with fluorescent

Spanish Central: Translation of fluorescent

Nglish: Translation of fluorescent for Spanish Speakers

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