/ Dictionary / Index S seismometer: Meaning and Definition of Find definitions for: seis•mom•e•ter Pronunciation: (sīz-mom'i-tur, sīs-), [key] — n. a seismograph equipped for measuring the direction, intensity, and duration of earthquakes by measuring the actual movement of the ground. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seismology seismoscope 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