seismic Meaning, definition in Cambridge English Dictionary
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Meaning of "seismic" - English Dictionary

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seismicadjective

uk   us   /ˈsaɪz.mɪk/
[before noun] specialized geology relating to or caused by an earthquake: seismic activity/waves having very great and damaging effects: The news that the chairman would resign set off seismic waves in the business community.
(Definition of seismic from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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