Explosion /(?)/

Ex·plo·sion

Explosion

n.
  1. The act of exploding; detonation; a chemical action which causes the sudden formation of a great volume of expanded gas; as, the explosion of gunpowder, of fire damp, etc.
  2. A bursting with violence and loud noise, because of internal pressure; as, the explosion of a gun, a bomb, a steam boiler, etc.
  3. A violent outburst of feeling, manifested by excited language, action, etc.; as, an explosion of wrath.
    A formidable explosion of high-church fanaticism.
  4. a sudden and substantial increase; a rapid acceleration; as, the population explosion.