
1) Air pollution 2) Smoke, essentially
Found on
https://www.crosswordclues.com/clue/particulates

Visible air pollutants consisting of particles appearing in smoke or mist.
Found on
http://www.daviddarling.info/encyclopedia/P/AE_particulates.html

The fine liquid or solid particles contained in combustion gases. The quantity and size of particulates emitted by cars, power and industrial plants, wood stoves, etc are regulated by the U.S. Environmental Protection Agency.
Found on
http://www.electromn.com/glossary/p.htm

Formed elements, discrete bodies, as contrasted with the surrounding liquid or semiliquid material; e.g., granules or mitochondria in cells. ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973

Particles made up of a wide range of natural materials (e.g., pollen, dust, resins), combined with man-made pollutant (e.g., smoke particles, metallic ash); in sufficient concentrations, particulates can be a respiratory irritant.
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http://www.encyclo.co.uk/local/21121

The Environmental Protection Agency has set National Ambient Air Quality Standards for particulates.
Found on
http://www.encyclo.co.uk/local/22399

See particulate matter.
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http://www.encyclo.co.uk/visitor-contributions.php

are tiny pieces of solid or liquid matter, such as soot, dust, fumes, or mist
Found on
http://www.epaw.co.uk/EPT/glossary.html

Type: Term Pronunciation: par-tik′yū-lăts Definitions: 1. Formed elements, discrete bodies, as contrasted with the surrounding liquid or semiliquid material; granules or mitochondria in cells.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=66083

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.
Found on
https://www.encyclo.co.uk/local/20094

The fine liquid or solid particles contained in combustion gases. The quantity and size of particulates emitted by cars, power and industrial plants, wood stoves, etc are regulated by the U.S. Environmental Protection Agency.
Found on
https://www.encyclo.co.uk/local/22819

Solid particles and liquid droplets small enough to become airborne.
Found on
https://www.encyclo.co.uk/local/22831
No exact match found.