What is the meaning of Detonation?

An explosion or sudden report made by the near-instantaneous decomposition or combustion of unstable substances. Specifically, combustion that spreads supersonically via shock compression.

Any sudden explosion made by an exothermic process (whether chemical or not) that produces a supersonic shock wave.

Engine knocking, a type of improper combustion in gasoline piston engines.

detonation

detonation

Source: wiktionary.org