seismic

adjective

1. pertaining to, of the nature of, or caused by an earthquake or vibration of the earth, whether due to natural or artificial causes.

adjective

1. relating to or caused by earthquakes or artificially produced earth tremorsAlso (less commonly): seismical (ˈsaɪzmɪkəl)
2. of enormous proportions or having highly significant consequencesseismic social change

adj.1858, from seismo- + -ic.

1. Relating to an earthquake or to other tremors of the Earth, such as those caused by large explosions.