/ Dictionary / Index S seismic sea wave: Meaning and Definition of Find definitions for: seis'mic sea' wave" Pronunciation: [key] — Oceanog. Oceanog. tsunami. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seismicity seismism Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language