Explosion

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Explosion

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1. The sudden production of a large quantity of gas, usually hot, from a much smaller amount of a gas, liquid, or solid. </dd>
2. Specifically, an explosion, sense 1, produced by combustion of a fuel and an oxidizer. </dd>
The distinction between an explosion, sense 2. and a detonation is that in an explosion the heat release rate and the number of molecules per unit volume increase with time more or less uniformly, whereas a detonation is propagated by an advancing shock front behind which exothermic reactions take place and thus is (spatially) nonuniform. [[/a>|/a> ]]

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use