seismic disturbance

Noun
  1. An instance of agitation of the earth's crust (synset 107443876)
    "the first shock of the earthquake came shortly after noon while workers were at lunch"
    is a type of: earthquake, quake, seism, temblor - shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity
    same as: shock

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