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disperse

/dɪˈspɜːrs//dɪˈspɜːs/·verb
to spread out over a wide area; to scatter or cause to scatter
Fig. 1 — A dandelion head, gone to grey, finally gives up its grip.
01Definition

To disperse is to break up a gathering and spread it out until it thins away — movement from concentration to diffusion. A crowd disperses when a concert ends; wind disperses seeds and smoke; light disperses through a prism. The word works both ways — things disperse on their own or are dispersed by some force — but it leans toward an even, gradual spreading that often fades to nothing, rather than a sudden, random fling. What was massed in one place ends up thinly distributed across many.

02In use
  • iThe crowd dispersed quietly once the fireworks ended.
  • iiMany plants rely on the wind to disperse their seeds across long distances.
  • iiiAs the morning mist gradually dispersed, the far ridge began to emerge.
03Collocations
  • the crowd dispersed
  • disperse seeds
  • widely dispersed
  • order protesters to disperse
  • disperse across the region

Family dispersal (noun) · dispersion (noun) · dispersed (adjective)

04Relations
05Compared
PairThe difference
disperse vs accumulatethings draw into one growing mass → accumulate; a mass breaks apart and spreads → disperse.
disperse vs amalgamateseparate organizations drawn together into one → amalgamate; a gathering spread out thin across a wide area → disperse.
disperse vs amassa great deal drawn into one place → amass; a mass broken up and spread → disperse.
disperse vs assemblefit parts together, or gather in one place → assemble; spread a gathering out thin over a wide area → disperse.
disperse vs blendmix things into one seamless whole → blend; spread a gathering out thin across a wide area → disperse.

Also compared with build up, cluster, coalesce, coincide, collect, combine, come together, concentrate, congregate, consolidate, converge, disband, dissipate, dissolve, diverge, divide, fuse, gather, integrate, intersect, join, meet, merge, pile up, radiate, scatter, separate, split, unite

06TOEFL & IELTS

A staple of TOEFL biology and chemistry lectures — seed dispersal, the dispersal of populations, light dispersing through a prism. IELTS reading passages use it for migration and urban growth. The noun form 'dispersal' is just as common in academic texts, so learn the pair together and notice whether the context is literal (particles) or social (crowds). Distinguish it from scatter: disperse suggests an even thinning-out, while scatter stresses sudden, random spreading.

07Asked
What is the difference between disperse and dispel?
Disperse spreads a physical crowd or substance out — police disperse a crowd, wind disperses smoke. Dispel drives away something intangible until it is gone — you dispel doubts, myths, fears, a rumour. The test: if you can point at it, you disperse it; if it lives only in the mind, you dispel it. You cannot dispel a crowd or disperse a fear.
What is the difference between disperse and disburse?
Different words that sound almost alike. Disperse (spread out) has an -sp-; disburse (pay out money) has a -sb-, and shares its root with 'purse'. A bank disburses funds; a crowd disperses. The misspelling 'dispurse' blends the two — avoid it. If money is moving, it is disburse; if a gathering is thinning, disperse.
What does 'dispersion' mean?
The noun for spreading out, with two precise technical lives. In physics, dispersion is the splitting of white light into colours by wavelength — a rainbow is atmospheric dispersion. In statistics, dispersion measures how spread out data are around the average. Both keep disperse's core: one thing fanning out into a spread.
What does 'order to disperse' mean?
A command from authorities for a crowd to break up and leave — 'the police ordered the protesters to disperse'. Refusing can itself be an offence in many places. It is the word's sharpest everyday use, and it keeps the core motion exactly: a mass in one spot told to thin out across many.
What is the past tense of disperse?
Dispersed — it is a fully regular verb (disperse, dispersed, dispersing, disperses), so there is no irregular form to memorize. The likelier stumble is the sound: the stress sits on the second syllable, dih-SPURSS, rhyming with 'immerse'. Keep the -per- clear in speech and spelling, and it will not slide into its lookalike 'disburse'.
What is 'seed dispersal'?
The way plants spread their seeds away from the parent — by wind, water, or animals — so offspring don't crowd and compete on one spot. The scene above is dispersal itself: a dandelion head torn apart by a gust, each seed on its own arc, sprouting wherever it lands. The noun dispersal is the biologist's standard term.
What is the difference between disperse and scatter?
The quick tell: scatter stresses sudden, random throwing, while disperse suggests an even thinning-out that often fades away. The full contrast, with both animated scenes, is on the disperse vs scatter page in the 'Compared' list above, alongside this verb's other pairings.