dispersion

[ dih-spur-zhuhn, -shuhn ]

/ dɪˈspɜr ʒən, -ʃən /

SEE SYNONYMS FOR dispersion ON THESAURUS.COM

noun

Also dispersal. an act, state, or instance of dispersing or of being dispersed.

Optics.

the variation of the index of refraction of a transparent substance, as glass, with the wavelength of light, with the index of refraction increasing as the wavelength decreases.
the separation of white or compound light into its respective colors, as in the formation of a spectrum by a prism.

Statistics. the scattering of values of a variable around the mean or median of a distribution.

Military. a scattered pattern of hits of bombs dropped under identical conditions or of shots fired from the same gun with the same firing data.

Also called disperse system. Physical Chemistry. a system of dispersed particles suspended in a solid, liquid, or gas.

(initial capital letter) Diaspora (def. 1).

Origin of dispersion

1350–1400; Middle English dispersio(u)n (<Anglo-French ) <Latin dispersiōn- (stem of dispersiō), equivalent to dispers(us) (see disperse) + -iōn--ion

OTHER WORDS FROM dispersion

non·dis·per·sion, nounpre·dis·per·sion, noun

Words nearby dispersion

dispersant, disperse, disperse dye, disperse phase, disperse system, dispersion, dispersion hardening, dispersion medium, dispersion relation, dispersive, dispersive medium

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for dispersion

Prince John resumed his retreat from the lists, and the dispersion of the multitude became general.
Ivanhoe|Walter Scott
I remark first that maize is a plant singularly unprovided with means of dispersion and protection.
Origin of Cultivated Plants|Alphonse De Candolle
The enormous significance of the Dispersion as a preparation for Christianity must not be overlooked.
The Expositor's Bible:|Alfred Plummer
The dispersion of the unhappy race, particularly in the West, was now complete and final.
The Great Events by Famous Historians, Volume 03|Various

The dispersion of this fluid appears to be universal, so that all the parts and organs contain it in a greater or less degree.
An Introduction to Entomology: Vol. IV (of 4)|William Kirby

British Dictionary definitions for dispersion (1 of 2)

dispersion

/ (dɪˈspɜːʃən) /

noun

another word for dispersal

physics

the separation of electromagnetic radiation into constituents of different wavelengths
a measure of the ability of a substance to separate by refraction, expressed by the first differential of the refractive index with respect to wavelength at a given value of wavelengthSymbol: D

statistics the degree to which values of a frequency distribution are scattered around some central point, usually the arithmetic mean or median

chem a system containing particles dispersed in a solid, liquid, or gas

military the pattern of fire from a weapon system

the range of speeds of such objects as the stars in a galaxy
the frequency-dependent retardation of radio waves as they pass through the interstellar medium
the deviation of a rocket from its prescribed path

ecology the distribution pattern of an animal or a plant population

British Dictionary definitions for dispersion (2 of 2)

Dispersion

/ (dɪˈspɜːʃən) /

noun

the Dispersion another name for the Diaspora

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for dispersion

dispersion

[ dĭ-spûr′zhən ]

n.

The act or process of dispersing.

The state of being dispersed.

Disperse system.

Scientific definitions for dispersion

dispersion

[ dĭ-spûr′zhən ]

The separation by refraction of light or other radiation into individual components of different wavelengths. Dispersion results in most materials because a material's index of refraction depends on the wavelength of the radiation passing through it; thus different wavelengths entering a material along the same path will fan out into different paths within it. Prisms, for example, diffuse white light (which contains an even mixture of visible wavelengths) into its variously colored components; rainbows are an effect of dispersion in water droplets.

单词	dispersion
释义	dispersion [ dih-spur-zhuhn, -shuhn ] / dɪˈspɜr ʒən, -ʃən / SEE SYNONYMS FOR dispersion ON THESAURUS.COM noun Also dispersal. an act, state, or instance of dispersing or of being dispersed. Optics. the variation of the index of refraction of a transparent substance, as glass, with the wavelength of light, with the index of refraction increasing as the wavelength decreases. the separation of white or compound light into its respective colors, as in the formation of a spectrum by a prism. Statistics. the scattering of values of a variable around the mean or median of a distribution. Military. a scattered pattern of hits of bombs dropped under identical conditions or of shots fired from the same gun with the same firing data. Also called disperse system. Physical Chemistry. a system of dispersed particles suspended in a solid, liquid, or gas. (initial capital letter) Diaspora (def. 1). Origin of dispersion 1350–1400; Middle English dispersio(u)n (<Anglo-French ) <Latin dispersiōn- (stem of dispersiō), equivalent to dispers(us) (see disperse) + -iōn--ion OTHER WORDS FROM dispersion non·dis·per·sion, nounpre·dis·per·sion, noun Words nearby dispersion dispersant, disperse, disperse dye, disperse phase, disperse system, dispersion, dispersion hardening, dispersion medium, dispersion relation, dispersive, dispersive medium Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for dispersion Prince John resumed his retreat from the lists, and the dispersion of the multitude became general. Ivanhoe\|Walter Scott I remark first that maize is a plant singularly unprovided with means of dispersion and protection. Origin of Cultivated Plants\|Alphonse De Candolle The enormous significance of the Dispersion as a preparation for Christianity must not be overlooked. The Expositor's Bible:\|Alfred Plummer The dispersion of the unhappy race, particularly in the West, was now complete and final. The Great Events by Famous Historians, Volume 03\|Various The dispersion of this fluid appears to be universal, so that all the parts and organs contain it in a greater or less degree. An Introduction to Entomology: Vol. IV (of 4)\|William Kirby British Dictionary definitions for dispersion (1 of 2) dispersion / (dɪˈspɜːʃən) / noun another word for dispersal physics the separation of electromagnetic radiation into constituents of different wavelengths a measure of the ability of a substance to separate by refraction, expressed by the first differential of the refractive index with respect to wavelength at a given value of wavelengthSymbol: D statistics the degree to which values of a frequency distribution are scattered around some central point, usually the arithmetic mean or median chem a system containing particles dispersed in a solid, liquid, or gas military the pattern of fire from a weapon system the range of speeds of such objects as the stars in a galaxy the frequency-dependent retardation of radio waves as they pass through the interstellar medium the deviation of a rocket from its prescribed path ecology the distribution pattern of an animal or a plant population British Dictionary definitions for dispersion (2 of 2) Dispersion / (dɪˈspɜːʃən) / noun the Dispersion another name for the Diaspora Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to dispersion diffusion, distribution, scattering Medical definitions for dispersion dispersion [ dĭ-spûr′zhən ] n. The act or process of dispersing. The state of being dispersed. Disperse system. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for dispersion dispersion [ dĭ-spûr′zhən ] The separation by refraction of light or other radiation into individual components of different wavelengths. Dispersion results in most materials because a material's index of refraction depends on the wavelength of the radiation passing through it; thus different wavelengths entering a material along the same path will fan out into different paths within it. Prisms, for example, diffuse white light (which contains an even mixture of visible wavelengths) into its variously colored components; rainbows are an effect of dispersion in water droplets. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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dispersion

noun

Origin of dispersion

OTHER WORDS FROM dispersion

Words nearby dispersion

Example sentences from the Web for dispersion

British Dictionary definitions for dispersion (1 of 2)

noun

British Dictionary definitions for dispersion (2 of 2)

noun

Words related to dispersion

Medical definitions for dispersion

n.

Scientific definitions for dispersion