Blast

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Blast

1. The brief and rapid movement of air or other fluid away from a center of outward pressure, as in an explosion.
2. The characteristic instantaneous rise in pressure, followed by a sudden decrease, that results from this movement, differentiated from less rapid pressure changes.
3. To take off from a launching pad or stand. Said of a rocket in reference to the blast effects caused by rapid combustion of fuel as the rocket starts to move upward. (Popular).
This term is commonly used for explosion, but the two terms should be distinguished. In space, an explosion could take place, but no blast would follow.

References

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