subduction

noun

sub·​duc·​tion (ˌ)səb-ˈdək-shən How to pronounce subduction (audio)
: the action or process in plate tectonics of the edge of one crustal plate descending below the edge of another
subduct verb

Examples of subduction 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.
Located on the Kuril–Kamchatka subduction zone, Kamchatka is prone to frequent seismic events due to ongoing tectonic activity between the Pacific and Okhotsk plates. Hollie Silverman, MSNBC Newsweek, 25 Oct. 2025 Scientists have noticed intriguing patterns on underwater subduction zones in recent years before some of the biggest earthquakes, like the 2014 magnitude-8.1 earthquake in Chile and the 2011 Tohoku earthquake and tsunami in Japan, which touched off the Fukushima nuclear disaster. Evan Bush, NBC news, 25 Sep. 2025 And so, with no water left at the surface, major subduction zones would grind to a halt, preventing the entombment of carbon dioxide. Quanta Magazine, 15 Sep. 2025 Judith Hubbard, an earthquake scientist and structural geologist, noted the quake occurred about 12 miles deep in a subduction zone, where such depths are typical. Doc Louallen, ABC News, 30 July 2025 See All Example Sentences for subduction

Word History

Etymology

French, from Late Latin subduction-, subductio withdrawal, from Latin subducere to withdraw, from sub- + ducere to draw — more at tow entry 1

First Known Use

1970, in the meaning defined above

Time Traveler
The first known use of subduction was in 1970

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Cite this Entry

“Subduction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subduction. Accessed 31 Oct. 2025.

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