deflagration

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun combustion that propagates through a gas or along the surface of an explosive at a rapid rate driven by the transfer of heat

From Latin dēflagrātiō, from dēflagrāre.

He accordingly resolved to manufacture and employ pyroxyle, although it has some inconveniences, that is to say, a great inequality of effect, an excessive inflammability, since it takes fire at one hundred and seventy degrees instead of two hundred and forty, and lastly, an instantaneous deflagration which might damage the firearms. — The Mysterious Island, Jules Verne

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