a black, carbonaceous substance produced during incomplete combustion of coal, wood, oil, etc., rising in fine particles and adhering to the sides of the chimney or pipe conveying the smoke: also conveyed in the atmosphere to other locations.
verb (used with object)
to mark, cover, or treat with soot.
finely divided carbon deposited from flames during the incomplete combustion of organic substances such as coal
(transitive) to cover with soot
A black, powdery substance that consists mainly of carbon and is formed through the incomplete combustion of wood, coal, diesel oil, or other materials. Because it absorbs energy from sunlight rather than reflecting it, soot is believed to be a cause of global warming, especially when it settles on snow and ice, reducing their reflectivity. Soot particles in the air are a contributing factor in respiratory diseases.


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  • Sooty-grouse

    noun 1. blue grouse.

  • Sooty-mold

    noun 1. Plant Pathology. a disease of plants, characterized by a black, sooty growth covering the affected parts, caused by any of several fungi. 2. any fungus causing this disease, as molds of the genera Capnodium, Phragmocapnias, and Scorias.

  • Sooty mould

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