verb (used with object), verb (used without object), deflagrated, deflagrating.
to burn, especially suddenly and violently.

1720–30; < Latin dēflagrātus (past participle of dēflagrāre to burn down), equivalent to dē- de- + flagr(āre) to burn + -ātus -ate1

deflagrable, adjective
deflagrability, noun
deflagration, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
deflagrate (ˈdɛfləˌɡreɪt, ˈdiː-)
to burn or cause to burn with great heat and light
[C18: from Latin dēflagrāre, from de- + flagrāre to burn]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
The mechanism suggested is to deflagrate unwanted explosive yield and detonate
  what remains.
The explosive does not detonate or deflagrate in the process, and the material
  that is removed is rendered inert.
The term applies to materials that either detonate or deflagrate.
Does not detonate or deflagrate at all and shows a medium effect when heated
  under confinement.
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