seis·​mo·​graph | \ ˈsīz-mə-ˌgraf How to pronounce seismograph (audio) , ˈsīs- \

Definition of seismograph

: an apparatus to measure and record vibrations within the earth and of the ground

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Other Words from seismograph

seismographer \ sīz-​ˈmä-​grə-​fər How to pronounce seismograph (audio) , sīs-​ \ noun
seismographic \ ˌsīz-​mə-​ˈgra-​fik How to pronounce seismograph (audio) , ˌsīs-​ \ adjective
seismography \ sīz-​ˈmä-​grə-​fē How to pronounce seismograph (audio) , sīs-​ \ noun

Examples of seismograph in a Sentence

Recent Examples on the Web Imagine a seismograph, but one that records the movement of water rather than of earth. Eric Niiler, Wired, 8 Mar. 2021 During the Apollo 11 moon landing, coated cable manufactured by the company was used to attach a seismograph to the lunar lander. Steven Kurutz, New York Times, 25 Sep. 2020 So many fans were jumping up and down and yelling so loudly the activity registered on a nearby seismograph. oregonlive, 19 Sep. 2020 Those were replaced with three new seismographs on Jan. 16. Segann March,, 4 Feb. 2020 The ensuing celebration by Seahawks fans registered on a nearby seismograph. Wayne Sterling And Allen Kim, CNN, 24 Dec. 2019 In principle, that power could help us to diagnose any early-stage disease, in the same way the subtle squiggles of a seismograph can give us early warnings of an earthquake. Christie Aschwanden, Wired, 10 Jan. 2020 So far this year, TexNet seismographs have recorded 209 earthquakes across the Lone Star State with the strongest documented as a 3.8-magnitude near Synder on Oct. 1. Houston Chronicle, 15 Oct. 2019 Devices such as an electroencephalogram (EEG) — a net of electrodes placed on the scalp — can detect these fluctuations and graph them as sinuous lines similar to those drawn by a seismograph. Quanta Magazine, 22 Mar. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'seismograph.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of seismograph

1858, in the meaning defined above

History and Etymology for seismograph

International Scientific Vocabulary

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Time Traveler for seismograph

Time Traveler

The first known use of seismograph was in 1858

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Cite this Entry

“Seismograph.” Dictionary, Merriam-Webster, Accessed 22 Sep. 2021.

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More Definitions for seismograph



English Language Learners Definition of seismograph

: a device that measures and records the movement of the earth during an earthquake


seis·​mo·​graph | \ ˈsīz-mə-ˌgraf How to pronounce seismograph (audio) , ˈsīs- \

Kids Definition of seismograph

: a device that measures and records vibrations of the earth

More from Merriam-Webster on seismograph Encyclopedia article about seismograph


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