seismometer: Meaning and Definition of

seis•mom•e•ter

Pronunciation: (sīz-mom'i-tur, sīs-), [key]
— n.
  1. 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.