dispersion

noun
dis·​per·​sion | \ di-ˈspər-zhən How to pronounce dispersion (audio) , -shən\

Definition of dispersion

1 capitalized, Judaism : diaspora sense 1b
2 : the act or process of dispersing : the state of being dispersed crowd dispersion
3 mathematics : the scattering of the values of a frequency distribution from an average
4 physics : the separation of light into colors by refraction or diffraction with formation of a spectrum also : the separation of radiation (see radiation sense 2) into components in accordance with some varying characteristic (such as energy)

5 chemistry

a : a dispersed (see disperse sense 2c) substance
b : a system (see system sense 1a(2)) consisting of a dispersed substance and the medium in which it is dispersed : colloid sense 2b

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Examples of dispersion in a Sentence

the dispersion of energy from a source

Recent Examples on the Web

An inundation of water covered the landscape last year, causing a prolific dispersion of birds across the region. Matt Wyatt, Houston Chronicle, "Teal season arrives for Texas hunters, and it’ll be a scorcher," 13 Sep. 2019 Police fired tear gas, water cannon and dispersion grenades at a crowd of about 400 mostly peaceful anti-capitalism demonstrators Saturday in the town of Bayonne. Washington Post, "The Latest: 68 arrests reported at protest near G-7 summit," 25 Aug. 2019 The dispersion between shorter-term and longer-term rates, known as the yield curve, is a crucial indicator of sentiment. Lauren Pollock And, WSJ, "The S&P 500 Gears Up for Another Run at a Record," 29 July 2018 In Bayonne, a town outside Biarritz, police fired tear gas, water cannons and dispersion grenades on a crowd of about 400 anti-capitalist demonstrators. Eli Stokols, Los Angeles Times, "Trump arrives for G-7 as allies brace for disruption," 24 Aug. 2019 The Taliban counter these advantages through dispersion and hiding among the people. Fox News, "How the Taliban remained dominant in Afghanistan: Terrifying tactics and an advancing weapons arsenal," 7 Aug. 2019 In winter, cold, polluted air is trapped near the ground by an inversion: a layer of warmer air above that prevents the dispersion of pollutants. Beth Gardiner, National Geographic, "Kids suffer most in one of Earth's most polluted cities," 26 Mar. 2019 Astronomers call this characteristic of a signal its dispersion measure (DM). Yvette Cendes, Discover Magazine, "What Are FRBs? The Discovery of Mysterious Signals From the Cosmos," 7 Feb. 2019 The dispersion between two- and 10-year Treasury rates, known as the yield curve, has also widened in past trading sessions to a recent 0.203 percentage point from an 11-year low of about 0.1 percentage point earlier this month. Daniel Kruger, WSJ, "U.S. Government Bonds Rise on Slower Growth Expectations," 28 Dec. 2018

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

14th century, in the meaning defined at sense 1

History and Etymology for dispersion

see disperse

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Statistics for dispersion

Last Updated

21 Sep 2019

Look-up Popularity

Time Traveler for dispersion

The first known use of dispersion was in the 14th century

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More Definitions for dispersion

dispersion

noun
dis·​per·​sion | \ dis-ˈpər-zhən, -shən How to pronounce dispersion (audio) \

Medical Definition of dispersion

1 : the act or process of dispersing : the state of being dispersed
2 : the separation of light into colors by refraction or diffraction with formation of a spectrum also : the separation of radiation into components in accordance with some varying characteristic (as energy)
3a : a dispersed substance
b : a system consisting of a dispersed substance and the medium in which it is dispersed : colloid sense 2b

called also disperse system

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Comments on dispersion

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