SEISMIC

seismic, seismal

(adjective) subject to or caused by an earthquake or earth vibration

Source: WordNet® 3.1

Etymology

Adjective

seismic (not comparable)

Related to, or caused by an earthquake or other vibration of the Earth.

(figuratively) Of very large or widespread effect.

Source: Wiktionary

Seis"mic, Seis"mal, a. Etym: [Gr.

Definition: Of or pertaining to an earthquake; caused by an earthquake. Seismic vertical, the point upon the earth's surface vertically over the center of effort or focal point whence the earthquake's impulse proceeds, or the vertical line connecting these two points.

Source: Webster’s Unabridged Dictionary 1913 Edition