seismism

[ sahyz-miz-uh m, sahys- ]
/ ˈsaɪz mɪz əm, ˈsaɪs- /

noun

the natural activity or group of phenomena associated with earthquakes.

Origin of seismism

First recorded in 1900–05; seism + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019