forest fire

forest fire

noun
an uncontrolled fire in a wooded area 
WordNet® 3.0, © 2006 by Princeton University.
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Encyclopedia Britannica
Encyclopedia

forest fire

uncontrolled fire occurring in vegetation more than 6 feet (1.8 m) in height. These fires often reach the proportions of a major conflagration and are sometimes begun by combustion and heat from surface and ground fires. A big forest fire may crown, that is, spread rapidly through the topmost branches of the trees before involving undergrowth or the forest floor. As a result, violent blowups are common in forest fires, and they may assume the characteristics of a fire storm. See wildland fire.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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