Earthquake Definition
 ûrthkwāk 
  earthquakes
  
    noun
  
 
    earthquakes
  
A shaking or trembling of the crust of the earth, caused by underground volcanic forces or by breaking and shifting of rock beneath the surface.
 Webster's New World 
Synonyms: 
  - quake
 - seism
 - temblor
 - upheaval
 - seismology
 - movement
 - foreshock
 - aftershock
 - trembler
 - shock
 - earth-tremor
 - tremor
 - earthshock
 - points on the Richter scale; secondary tremor
 - /etc
 
Other Word Forms of Earthquake
Noun
Singular:
 earthquakePlural:
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