3
Rapidly expanding heat and gas and/or plasma.

Usually caused by chemical or nuclear reactions, but can also have many other causes such as the release of pressurised gas.
Spend a week in baghdad or go to an active quarry for examples.
by waffle October 16, 2003
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4
An explosion may be defined as a loud noise accompanied by the sudden going-away of things from the places they were before.
by iMacThere4iAm August 09, 2006
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6
The process that generally entails taking large objects and turning them into many, many small objects.
The Mythbusters once made a cement truck disappear in a fiery explosion.
by Zazu_Biggs October 04, 2009
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7
What you say after giving someone a highfive as if your high five was so epic it bent the laws of reality and exploded with no negative consequence.
Brandon: "ADRIAN"

Adrian: "BRANDON"

*high five*

Brandon/Adrian in unison: "EXPLOSION!"
by nom nom nom llama brains November 30, 2010
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