explosion

1. a) A release of mechanical, chemical, or nuclear energy in a sudden and often violent manner with the generation of high temperature and usually with the release of gases. b) A violent bursting as a result of internal pressure. c) The loud, sharp sound made as a result of either of these actions.
2. A sudden, often vehement outburst: an explosion of rage.
3. A sudden, great increase: a population explosion; the explosion of illegal drug use.
4. Linguistics See plosion.