1. Détonation.
2. Déchaînement.
ETYM Latin explosio a driving off by clapping: cf. French explosion explosion. Related to Explode.
1. A violent release of energy caused by a chemical or nuclear reaction; SYN. detonation.
2. The act of exploding or bursting something; SYN. burst.
An explosion is an uncontrolled chemical reaction which generates a large amount of heat and gas in a short period of time.