seismograph
/ˈsaɪzməˌɡræf/
noun
- An instrument that measures and records the movements of the ground during an earthquake.
- Scientists use a seismograph to determine the strength and location of an earthquake.
- The seismograph detected a small tremor that no one in the city felt.
- The museum has an old seismograph that uses a pen and a rotating drum of paper.
Synonyms