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[def-luh-greyt] /ˈdɛf ləˌgreɪt/
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
Related forms
deflagrable, adjective
deflagrability, noun
deflagration, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for deflagrate
  • 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.
  • Low explosives deflagrate producing a large volume of heated gas.
  • 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.
  • Low explosives means explosive materials, which can be caused to deflagrate when, confined.
  • Items that will deflagrate, explode, or detonate upon initiation.
  • Explosive material that will burn or deflagrate when ignited.
  • Items that upon initiation will deflagrate, explode, or detonate.
  • It is designed to deflagrate, or burn, to produce high pressure gases.
British Dictionary definitions for deflagrate


/ˈdɛfləˌɡreɪt; ˈdiː-/
to burn or cause to burn with great heat and light
Derived Forms
deflagration, noun
Word Origin
C18: from Latin dēflagrāre, from de- + flagrāre to burn
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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