Definitions of particulate matter
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a small discrete mass of solid or liquid matter that remains individually dispersed in gas or liquid emissions (usually considered to be an atmospheric pollutant)
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synonyms:
particulate
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types:
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dust
fine powdery material such as dry earth or pollen that can be blown about in the air
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chalk dust
dust resulting from writing with a piece of chalk
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fallout, radioactive dust
the radioactive particles that settle to the ground after a nuclear explosion
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dust
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Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors.
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