fluo·​res·​cent flu̇-ˈre-sᵊnt How to pronounce fluorescent (audio)
: having or relating to fluorescence
: bright and glowing as a result of fluorescence
fluorescent inks
broadly : very bright in color
fluorescent noun
fluorescently adverb

Examples of fluorescent in a Sentence

Recent Examples on the Web The identification technique also makes use of the COI gene but incorporates fluorescent dyes and machine learning into the PCR procedure to help recognize species. Angela Posada-Swafford, Discover Magazine, 28 June 2024 Two people in fluorescent construction vests and white jackets are paddling into our hole atop cheap cherry-red kayaks. Natalie Krebs, Outdoor Life, 19 June 2024 The Human Strain The thousands of blood samples EcoHealth has procured end up under the fluorescent gleam of a biosafety level–four laboratory in Johannesburg. Lois Parshley, Scientific American, 1 May 2018 An anti-glare screen coating improves readability, even under fluorescent lights and other high-reflection environments. Brian Westover, PCMAG, 4 June 2024 See all Example Sentences for fluorescent 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'fluorescent.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1853, in the meaning defined at sense 1

Time Traveler
The first known use of fluorescent was in 1853

Dictionary Entries Near fluorescent

Cite this Entry

“Fluorescent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluorescent. Accessed 14 Jul. 2024.

Kids Definition


: having or relating to fluorescence
: very bright in color
fluorescent markers

More from Merriam-Webster on fluorescent

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