Source : Webster's Revised Unabridged Dictionary (1913)

Seismological \Seis`mo*log"ic*al\, a.
   Of or pertaining to seismology. -- {Seis`mo*log"ic*al*ly},
   adv.

Source : WordNet®

seismological
     adj : of or concerned with seismology [syn: {seismologic}]