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[dih-spurs] /dɪˈspɜrs/
verb (used with object), dispersed, dispersing.
to drive or send off in various directions; scatter:
to disperse a crowd.
to spread widely; disseminate:
to disperse knowledge.
to dispel; cause to vanish:
The wind dispersed the fog.
Physical Chemistry. to cause (particles) to separate uniformly throughout a solid, liquid, or gas.
Optics. to subject (light) to dispersion.
verb (used without object), dispersed, dispersing.
to separate and move apart in different directions without order or regularity; become scattered:
The crowd dispersed.
to be dispelled; be scattered out of sight; vanish:
The smoke dispersed into the sky.
Physical Chemistry. noting the dispersed particles in a dispersion.
1350-1400; Middle English dispersen, disparsen (< Middle French disperser) < Latin dispersus (past participle of dispergere), equivalent to di- di-2 + -sper(g)- scatter (stem of -spergere, combining form of spargere to scatter, strew) + -sus past participle suffix
Related forms
[dih-spur-sid-lee] /dɪˈspɜr sɪd li/ (Show IPA),
disperser, noun
dispersibility, noun
dispersible, adjective
predisperse, verb (used with object), predispersed, predispersing.
redisperse, verb, redispersed, redispersing.
undispersed, adjective
undispersing, adjective
well-dispersed, adjective
Can be confused
disperse, disburse.
disperse, dispose.
1. See scatter. 2. sow, broadcast. 7. disappear, evanesce.
1. combine, collect. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for dispersed
  • Scientists warn that the dispersed oil, as well as the dispersants themselves, might cause long-term harm to marine life.
  • And the dispersed oil has not exactly gone: it simply has a better chance of biodegrading, and less chance of coming ashore.
  • It says the colored panels don't need to face the sun and can absorb dispersed light.
  • Because they had lost the animals that ate their fruit and dispersed their seeds.
  • Public squares and parks were evenly dispersed at intersections.
  • When flammable powders are dispersed in the air, they can explode.
  • The police and gendarmes have repeatedly dispersed large crowds, and there have been several arrests in the lower quarters.
  • Their new gene wiki is dispersed on many pages throughout the user-generated encyclopedia.
  • Instead, they make it easier for the pollen to be dispersed by other creatures.
  • Year-round: open habitats with dispersed trees, from agricultural to urban.
British Dictionary definitions for dispersed


to scatter; distribute over a wide area
to dissipate or cause to dissipate
to leave or cause to leave a gathering, often in a random manner
to separate or be separated by dispersion
(transitive) to diffuse or spread (news, information, etc)
to separate (particles) throughout a solid, liquid, or gas, as in the formation of a suspension or colloid
of or consisting of the particles in a colloid or suspension: disperse phase
Derived Forms
dispersedly (dɪˈspɜːsɪdlɪ) adverb
disperser, noun
Word Origin
C14: from Latin dispērsus scattered, from dispergere to scatter widely, from di-² + spargere to strew
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
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Word Origin and History for dispersed



late 14c., from Latin dispersus, past participle of dispergere "to scatter," from dis- "apart, in every direction" (see dis-) + spargere "to scatter" (see sparse). The Latin word is glossed in Old English by tostregdan. Related: Dispersed; dispersing.

Online Etymology Dictionary, © 2010 Douglas Harper
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dispersed in Medicine

disperse dis·perse (dĭ-spûrs')
v. dis·persed, dis·pers·ing, dis·pers·es

  1. To cause to separate and move in different directions; scatter.

  2. To cause to vanish or disappear.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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