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soot

[soo t, soot] /sʊt, sut/
noun
1.
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)
2.
to mark, cover, or treat with soot.
Origin
900
before 900; Middle English; Old English sōt; cognate with Old Norse sōt
Related forms
sootless, adjective
sootlike, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for soot
  • Some light bounces off soot particles in the air and goes back into outer space.
  • Buckyballs, once found, turned up in substances as commonplace as the soot made by candles.
  • Plumage can appear browner with wear or appear blacker from contact with chimney soot.
  • The ink might be nothing more than sugar cane juice mixed with campfire soot.
  • Swan's electric lamp deposited a dark layer of soot inside its inner surface, obscuring the light.
  • Tape weights around the edges of the covering material to prevent soot from escaping.
  • Every inch of the building was covered by thick soot.
  • Done wrong, you get no farther than the trailhead, where you're stuck cleaning soot out of your camp stove.
  • The soot is from an engine fire the previous owner had.
  • But the sulphur that spews from the smokestacks of coal-fired power stations causes acid rain and the soot generates smog.
British Dictionary definitions for soot

soot

/sʊt/
noun
1.
finely divided carbon deposited from flames during the incomplete combustion of organic substances such as coal
verb
2.
(transitive) to cover with soot
Word Origin
Old English sōt; related to Old Norse, Middle Low German sōt, Lithuanian sódis, Old Slavonic sažda, Old Irish sūide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for soot
n.

Old English sot "soot," from Proto-Germanic *sotam "soot" (cf. Old Norse sot, Old Dutch soet, North Frisian sutt), literally "what settles," from PIE *sod-o- (cf. Old Church Slavonic sažda, Lithuanian suodžiai, Old Irish suide, Breton huzel "soot"), suffixed form of root *sed- (1) "to sit" (see sedentary).

Online Etymology Dictionary, © 2010 Douglas Harper
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soot in Science
soot
  (st)   
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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