seis·​mom·​e·​ter sīz-ˈmä-mə-tər How to pronounce seismometer (audio)
: a seismograph measuring the actual movements of the ground (as on the earth or the moon)
seismometric adjective

Examples of seismometer in a Sentence

Recent Examples on the Web These could potentially collect images of Earth-sized exoplanets, and seismometers placed at cold traps could measure the moon’s own movement amidst gravitational waves. Christian Thorsberg, Smithsonian Magazine, 27 Mar. 2024 Their work suggests fibers may be sensitive to seismic waves from deep inside the moon—a murky place that Apollo’s seismometers could not easily probe. IEEE Spectrum, 14 Mar. 2024 The system is still evolving and depends on the addition of seismometers. Erick Mendoza, NBC News, 9 Feb. 2024 Others are using the cables as an ultra-sensitive instrument for detecting volcanic eruptions and earthquakes: Unlike a traditional seismometer stuck in one place, a web of fiber optic cables can cover a whole landscape, providing unprecedented detail of Earth’s rumblings at different locations. Matt Simon, WIRED, 31 Jan. 2024 There was no one in the vicinity—the middle of the sea in the middle of the night—to see or hear any of this, but the event registered with the force of a small earthquake on seismometers 15 miles away, on the Danish island of Bornholm. Mark Bowden, The Atlantic, 13 Dec. 2023 The center houses an earthquake monitoring system—rows of computer monitors that show seismometer data worming across the screens—and servers for a tsunami modeling system. Chuong Nguyen, Ars Technica, 27 Nov. 2023 From the signals recorded by these seismometers, the researchers were able to pinpoint the time, location, and intensity of each explosion. Popular Science, 7 Sep. 2023 There are over 700 seismometers throughout the state. IEEE Spectrum, 14 Aug. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'seismometer.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1841, in the meaning defined above

Time Traveler
The first known use of seismometer was in 1841

Dictionary Entries Near seismometer

Cite this Entry

“Seismometer.” Dictionary, Merriam-Webster, Accessed 23 May. 2024.

Kids Definition


seis·​mom·​e·​ter sīz-ˈmäm-ət-ər How to pronounce seismometer (audio)
: a seismograph that measures the actual movements of the ground

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