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fault line

noun

: something resembling a fault : split, rift
… a major conceptual fault line in foreign policy …Morton Kondracke

Examples of fault line in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The data revealed that when lake levels were lower during drier periods, fault lines moved faster and magma flux was higher. New Atlas, 25 Nov. 2025 Most often, quake swarms are caused by fluids — typically water — interacting with fault lines, the federal agency said. Don Sweeney, Sacbee.com, 25 Nov. 2025 Earthquakes result from the abrupt release of energy along fault lines, causing the ground to shake as seismic waves radiate away from the earthquake’s epicenter. Hollie Silverman, MSNBC Newsweek, 24 Nov. 2025 That border is the Missouri River, which divides South Dakota into two halves, like an aquatic fault line has severed the state. Literary Hub, 21 Nov. 2025 See All Example Sentences for fault line

Word History

First Known Use

1869, in the meaning defined above

Time Traveler
The first known use of fault line was in 1869

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Cite this Entry

“Fault line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fault%20line. Accessed 3 Dec. 2025.

Last Updated: - Updated example sentences
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