Just saying

explosion /ĭk-splō′zhən/
noun

1. 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.

2. A violent bursting as a result of internal pressure.

3. The loud, sharp sound made as a result of either of these actions.

The American Heritage® Dictionary of the English Language, 5th Edition •