Definition of seismic in English:

seismic

Line breaks: seis|mic
Pronunciation: /ˈsʌɪzmɪk
 
/

adjective

  • 1Relating to earthquakes or other vibrations of the earth and its crust: after a few days of seismic activity the volcanic eruption started
    More example sentences
    • Area vulcanologists said seismic activity remained at stable, non-threatening levels.
    • There were also seismic activity earthquakes in central California.
    • The Government has already identified areas that are vulnerable to earthquake based on seismic activity.
  • 1.1Relating to or denoting geological surveying methods involving vibrations produced artificially by explosions: seismic data show the deep structure of rift systems
    More example sentences
    • Someone had to man the rigs and further seismic surveying would be based at a nearby port.
    • Problems often occur with seismic surveying at sea, such as battery power that is sapped after a few months and release mechanisms that do not perform correctly.
    • Before the wells were dug, surveys and seismic testing had to be undertaken using sonar equipment, to find the best site for digging.
  • 1.2Of enormous proportions or effect: there are seismic pressures threatening American society
    More example sentences
    • Barring an event of seismic proportions, the ruling party's candidate will be Namibia's President-elect.
    • It is a reminder that travel can have a seismic effect, either on the travellers and their homeland or the places visited.
    • For this to happen it will take a cultural change of seismic proportions.

Derivatives

seismical

adjective

seismically

adverb
[as submodifier]: this region is the most seismically active in North America
More example sentences
  • ‘Nevada is the second most seismically active state in the US after California,’ said Voegele.
  • Iran, Afghanistan, Pakistan and Northern India are seismically active because of this major set of faults.
  • Greece is one of the most seismically active countries in Europe.

Origin

mid 19th century: from Greek seismos 'earthquake' (from seien 'to shake') + -ic.

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