[ 'sʌɪzmɪk ]
■ adjective
1》 relating to earthquakes or other vibrations of the earth and its crust.
↘relating to or denoting geological surveying methods involving vibrations produced artificially by explosions.
2》 of enormous proportions or effect.
Derivatives
~al adjective
~ally adverb
Origin
C19: from Gk seismos 'earthquake' + -ic .