1.a violent release of energy caused by a chemical or nuclear reaction
2.the act of exploding or bursting something;
the explosion of the firecrackers awoke the children
3.a sudden great increase;
the population explosion
4.the noise caused by an explosion;
the explosion was heard a mile away
5.the terminal forced release of pressure built up during the occlusive phase of a stop consonant
6.a sudden outburst;
an explosion of laughter
7.a golf shot from a bunker that typically moves sand as well as the golf ball