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1.
A military term for the moment before a bomb explodes, as opposed to "right of boom" which is after - based on a left to right timeline. Popularized by Washington Post writer Rick Atkinson.
The Pentagon is putting a grip of money into getting left of boom with those wily IEDs.
by Steve Prestemon October 01, 2007
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Words related to left of boom:

bomb explosives ieds ifps military