Try Our Apps
Dictionary.com

follow Dictionary.com

Famous Last Words

dispersion

[dih-spur-zhuh n, -shuh n] /dɪˈspɜr ʒən, -ʃən/
noun
1.
Also, dispersal. an act, state, or instance of dispersing or of being dispersed.
2.
Optics.
  1. 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.
  2. the separation of white or compound light into its respective colors, as in the formation of a spectrum by a prism.
3.
Statistics. the scattering of values of a variable around the mean or median of a distribution.
4.
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.
5.
Also called disperse system. Physical Chemistry. a system of dispersed particles suspended in a solid, liquid, or gas.
6.
(initial capital letter) Diaspora (def 1).
Origin of dispersion
1350-1400
1350-1400; Middle English dispersio(u)n (< Anglo-French) < Latin dispersiōn- (stem of dispersiō), equivalent to dispers(us) (see disperse) + -iōn- -ion
Related forms
nondispersion, noun
predispersion, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
British Dictionary definitions for disperse system

dispersion

/dɪˈspɜːʃən/
noun
1.
another word for dispersal
2.
(physics)
  1. the separation of electromagnetic radiation into constituents of different wavelengths
  2. 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 wavelength D
3.
(statistics) the degree to which values of a frequency distribution are scattered around some central point, usually the arithmetic mean or median
4.
(chem) a system containing particles dispersed in a solid, liquid, or gas
5.
(military) the pattern of fire from a weapon system
6.
  1. the range of speeds of such objects as the stars in a galaxy
  2. the frequency-dependent retardation of radio waves as they pass through the interstellar medium
  3. the deviation of a rocket from its prescribed path
7.
(ecology) the distribution pattern of an animal or a plant population

Dispersion

/dɪˈspɜːʃən/
noun
1.
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
Cite This Source
Word Origin and History for disperse system

dispersion

n.

late 14c., from Old French dispersion (13c.), from Latin dispersionem (nominative dispersio) "a scattering," noun of action from past participle stem of dispergere (see disperse).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
disperse system in Medicine

disperse system n.
A system, such as a colloid, consisting of a substance dispersed in a medium.

dispersion dis·per·sion (dĭ-spûr'zhən, -shən)
n.

  1. The act or process of dispersing.

  2. The state of being dispersed.

  3. Disperse system.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
disperse system in Science
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 © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for dispersion

Some English speakers likely know this word

Word Value for disperse

11
12
Scrabble Words With Friends

Nearby words for disperse system