1 : of, subject to, or caused by an earthquake also : of or relating to an earth vibration caused by something else (such as an explosion or the impact of a meteorite) 2 : of or relating to a vibration on a celestial body (such as the moon) comparable to a seismic event on earth.

What is an example of seismic?

An example of something seismic is the movement of land during an earthquake; seismic movement. Of, subject to, or caused by an earthquake or earth vibration. Earthshaking. ... Subject to earthquakes.

What does seismic activity mean?

The seismicity, or seismic activity, of an area is the frequency, type, and size of earthquakes experienced over a period of time. The word tremor is also used for non-earthquake seismic rumbling.