Definition of deflagrate in English:

deflagrate

verb

Chemistry
dated
  • Burn away or cause (a substance) to burn away with a sudden flame and rapid, sharp combustion.

    with object ‘the current will deflagrate some of the particles’
    • ‘If the fuel deflagrates but does not detonate, victims will be severely burned and will probably also inhale the burning fuel.’
    • ‘The exercise was designed around techniques for dealing with low-order explosives by gaining entrance to the munition case and then deflagrating the contents.’

Origin

Early 18th century: from Latin deflagrat- ‘burnt up’, from the verb deflagrare, from de- ‘away, thoroughly’ + flagrare ‘to burn’.

Pronunciation

deflagrate

/ˈdɛfləˌɡreɪt//ˈdefləˌɡrāt/