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firedamp

[fahyuh r-damp] /ˈfaɪərˌdæmp/
noun, Mining.
1.
a combustible gas consisting chiefly of methane, formed especially in coal mines, and dangerously explosive when mixed with certain proportions of atmospheric air.
2.
the explosive mixture itself.
Origin
1670-1680
1670-80; fire + damp
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for firedamp
  • It was strongly and widely believed that when a mine explosion occurred, a flammable atmosphere of firedamp must be present.
  • Shortly after the day shift began work a violent explosion of firedamp took place.
British Dictionary definitions for firedamp

firedamp

/ˈfaɪəˌdæmp/
noun
1.
a mixture of hydrocarbons, chiefly methane, formed in coal mines. It forms explosive mixtures with air See also afterdamp
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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16
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