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Definition of seismic adjective from the Oxford Advanced Learner's Dictionary

seismic

adjective
 
/ˈsaɪzmɪk/
 
/ˈsaɪzmɪk/
[only before noun]
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  1. connected with or caused by earthquakes
    • seismic waves
  2. having a very great effect; of very great size
    • a seismic shift in the political process
    3. Word Originmid 19th cent.: from Greek seismos ‘earthquake’ (from seien ‘to shake’) + -ic.
See seismic in the Oxford Advanced American DictionarySee seismic in the Oxford Learner's Dictionary of Academic English
Check pronunciation: seismic

Nearby words

trait
noun
 
 
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