Word Study
seismic
CIDE DICTIONARY
seismic, a. [Gr. seismo`s an earthquake, from sei`ein to shake.].
Of or pertaining to an earthquake; caused by an earthquake. [1913 Webster]
OXFORD DICTIONARY
seismic, adj. of or relating to an earthquake or earthquakes.
Derivative
seismal adj. seismical adj. seismically adv.
Etymology
Gk seismos earthquake f. seio shake
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