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English definition of “shock wave”

shock wave

noun [C]    
a sudden wave of increased pressure or temperature , caused by an explosion , an earthquake , or an object moving faster than the speed of sound Earthquakes and volcanic eruptions a very strong reaction that spreads through a group of people when something surprising or bad happens : The assassination of the president sent shock waves across the world .Reacting and responding
(Definition of shock wave noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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