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HPM

HPM (plural HPMs)


noun 
Definition:
 
electrical-infrastructure-destroying bomb: an e-bomb with capacitors that emit powerful electromagnetic impulses able to penetrate hardened targets such as underground bunkers via antennas, air vents, and plumbing pipes and cause massive power surges intended to destroy an enemy's electrical and computer infrastructures

[20th century. Abbreviation of high-power microwave]
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