fluorescence

noun
fluo·​res·​cence | \ flu̇-ˈre-sᵊn(t)s How to pronounce fluorescence (audio) , flȯ- \

Definition of fluorescence

: luminescence that is caused by the absorption of radiation at one wavelength followed by nearly immediate reradiation usually at a different wavelength and that ceases almost at once when the incident radiation stops also : the radiation emitted — compare phosphorescence

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Examples of fluorescence in a Sentence

studied the fluorescence of certain elements
Recent Examples on the Web Bok also noted the fluorescence of human fingernails and teeth, which doesn't attract scientific attention. Alex Fox, Smithsonian Magazine, "Wombats and Tasmanian Devils Glow Under Ultraviolet Light," 28 Dec. 2020 More rigorous studies involve filtering out this visible light, and measuring the fluorescence’s true strength and color. New York Times, "More Mammals Are Hiding Their Secret Glow," 18 Dec. 2020 The authors linked the spike (the red one) to a fluorescent protein and found out that producing their hybrid protein dropped the fluorescence by about 30 percent. John Timmer, Ars Technica, "A mildly insane idea for disabling the coronavirus," 28 Nov. 2020 Robinson and his colleagues used portable X-ray fluorescence to study the layers of paint on the ceiling of Pinwheel Cave. Kiona N. Smith, Ars Technica, "Rock art in a California cave was a visual guide to hallucinogenic plants," 24 Nov. 2020 In this sense Lethem’s fluorescence in Brooklyn was only the most zeitgeisty moment the author has had in a long career dedicated to writing intelligible but pointedly odd novels. Charles Finch, Los Angeles Times, "It’s the twilight of the Jonathans, and Jonathan Lethem feels fine," 5 Nov. 2020 Which begs the question, did fluorescence evolve in mammals before the three branches split apart? Theresa Machemer, Smithsonian Magazine, "Platypuses Glow Green Under Ultraviolet Light," 3 Nov. 2020 That green fluorescence allowed the team to visually track the changes in calcium concentrations in response to stimulating the plant's sensitive hairs with a needle. Jennifer Ouellette, Ars Technica, "The secret of how the Venus flytrap “remembers” when it captures prey," 20 Oct. 2020 Yet the sensationalistic particulars of voter fraud that were thriving online and on Fox News were withering in the evidentiary fluorescence of the courts. Jim Rutenberg, New York Times, "How President Trump’s false claim of voter fraud is being used to disenfranchise Americans.," 30 Sep. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fluorescence.' 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 fluorescence

1852, in the meaning defined above

History and Etymology for fluorescence

fluorspar + opalescence

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Learn More about fluorescence

Time Traveler for fluorescence

Time Traveler

The first known use of fluorescence was in 1852

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Statistics for fluorescence

Last Updated

15 Jan 2021

Cite this Entry

“Fluorescence.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluorescence. Accessed 23 Jan. 2021.

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More Definitions for fluorescence

fluorescence

noun
flu·​o·​res·​cence | \ -ˈes-ᵊn(t)s How to pronounce fluorescence (audio) \

Medical Definition of fluorescence

: luminescence that is caused by the absorption of radiation at one wavelength followed by nearly immediate reradiation usually at a different wavelength and that ceases almost immediately when the incident radiation stops also : the radiation emitted

Other Words from fluorescence

fluorescent \ -​ˈes-​ᵊnt How to pronounce fluorescence (audio) \ adjective
fluorescently adverb

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Comments on fluorescence

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