For Particulates we have terms and definitions in 5 topics. The topics are Automotive, Environment, Natural Gas, Satellite Meteorology and Science.

Solid particles of soot and other substances that result from combustion.
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1. Fine liquid or solid particles such as dust, smoke, mist, fumes, or smog, found in air or emissions. 2. Very small solids suspended in water; they can vary in size, shape, density and electrical charge and can be gathered together by coagulation and flocculation.
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Separate and minute particles in a gas stream. Also, those appearing in the atmosphere as a result of chimney effluent. See POLLUTION, ATMOSPHERIC.
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Airborne solid and liquid aerosols that, when in high concentrations, seriously affect the lives of people and animals, harm plants, or threaten ecosystems.
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Small particles of a substance, especially those suspended in a gas; small liquid droplets or tiny pieces of dust or other solid materials that float in the air
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