The noun explosion has 7 senses (first 2 from tagged texts)
1. (6) explosion, detonation, blowup -- (a violent release of energy caused by a chemical or nuclear reaction)
2. (2) explosion, burst -- (the act of exploding or bursting something; "the explosion of the firecrackers awoke the children"; "the burst of an atom bomb creates enormous radiation aloft")
3. explosion -- (a sudden great increase; "the population explosion"; "the information explosion")
4. explosion -- (the noise caused by an explosion; "the explosion was heard a mile away")
5. plosion, explosion -- (the terminal forced release of pressure built up during the occlusive phase of a stop consonant)
6. explosion -- (a sudden outburst; "an explosion of laughter"; "an explosion of rage")
7. explosion -- (a golf shot from a bunker that typically moves sand as well as the golf ball)