Seismograph

Pronunciation: /ˈsisˈmoʊˈɡɹæf/

Seismograph (noun)

  1. A scientific instrument that records ground shaking caused by earthquakes or other strong vibrations.
  2. A device that measures and records how the ground moves over time, producing a trace for analysis.

Examples

  • A seismograph records shaking during an earthquake.
  • The seismograph helps scientists detect an earthquake early.