Definition of deflagration in English:

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Pronunciation: /dɛfləˈɡreɪʃ(ə)n/


[mass noun]
1The action of heating a substance until it burns away rapidly.
Example sentences
  • Other times, depending on the casement, whether it is plastic or metal, especially metal, it will do low order detonation, or what we call deflagration.
  • Very few blast-resistant windows installed during the renovation of the structure that was begun in 1999 and scheduled for completion in 2010 broke during the impact and deflagration of aircraft fuel.
  • Improper dispersal of the fuel aerosol or a mis-timed firing of the initiator could produce a large fireball, but the resulting deflagration would not produce the blast shock wave of the intended explosive detonation.
1.1 technical Combustion which propagates through a gas or across the surface of an explosive at subsonic speeds, driven by the transfer of heat. Compare with detonation.
Example sentences
  • Explosives experts refer to rapid explosive reactions as detonation and slower explosive reactions as deflagration.


Early 17th century: from Latin deflagratio(n-), from the verb deflagrare (see deflagrate).

For editors and proofreaders

Line breaks: def¦la|gra¦tion

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