/ Dictionary / Index S seismoscope: Meaning and Definition of Find definitions for: seis•mo•scope Pronunciation: (sīz'mu-skōp", sīs'-), [key] — n. an instrument for recording the occurrence or time of an earthquake. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seismometer SEIU Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language