dispersant

[dih-spur-suhnt]
noun
1.
something that disperses.
2.
Physical Chemistry. any admixture to a dispersion capable of maintaining the dispersed particles in suspension.
adjective
3.
acting as a dispersant.

Origin:
1940–45; disperse + -ant

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World English Dictionary
dispersant (dɪsˈpɜːsənt)
 
n
a liquid or gas used to disperse small particles or droplets, as in an aerosol

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
You're adding an anti-foaming additive, a dispersant and a detergent.
We found that all of that dispersant added at depth stayed in the deepwater
  plumes.
Toxicity testing to determine the hazards of eight dispersant products has been
  performed in two phases.
Once the dispersant is applied to the oil slick, the dispersant begins to break
  down in the environment.
Images for dispersant
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