sea·​mount | \ ˈsē-ˌmau̇nt How to pronounce seamount (audio) \

Definition of seamount

: a submarine mountain rising above the deep-sea floor

Examples of seamount in a Sentence

Recent Examples on the Web Aqua Blu’s itinerary passes through the Coral Triangle, visiting several islands on seven-night itineraries from Sorong, with the chance to dive shallow seamounts and deep drop-offs along the way. Terry Ward, Condé Nast Traveler, "4 Cruises Hand-Picked for Divers and Snorkelers," 15 Jan. 2020 The navigational charts used by the ship's crew failed to show a seamount, or undersea mountain, protruding from the ocean floor. Kyle Mizokami, Popular Mechanics, "15 Years Ago, a U.S. Navy Submarine Ran Into a Mountain," 9 Jan. 2020 Hidden beneath the waves of the Tyrrhenian Sea near southwestern Italy lies a newfound volcanic mosaic dotted with geothermal chimneys and flat-topped seamounts. Fox News, "Hidden world of undersea volcanoes and lava flows discovered off Italian coast," 27 Sep. 2019 As high as a four-story building and slightly wider than a city bus, the seamount only began appearing on navigational charts in 1606. Greg Noone, Smithsonian, "This Tiny, Uninhabitable Islet in the North Atlantic Has Been Attracting Fishermen and Adventurers for Decades," 30 Oct. 2019 That’s because the grooves were cutting through real-time tidal ripple marks moving through the seamount sediment. Todd Woody, National Geographic, "Do we know enough about the deep sea to mine it?," 24 July 2019 Go on a behind-the-scenes visit to the Charles Darwin Research Station to hear about local research on seamounts, or underwater mountains. National Geographic, "Ecuador and the Galápagos Expedition: Biodiversity Hotspot," 10 Sep. 2019 Starting in the 1960s, seamounts north of the Hawaiian Islands were heavily fished and scarred with trawl nets. Scientific American, "Ballistic Maggots, Synthetic Winks and Why You’re Not Goop: This Week’s Best Science GIFs," 9 Aug. 2019 That conundrum motivated the voyage to the seamount. Warren Cornwall, Science | AAAS, "Mountains hidden in the deep sea are biological hot spots. Will mining ruin them?," 12 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'seamount.' 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 seamount

1941, in the meaning defined above

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The first known use of seamount was in 1941

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Last Updated

5 Feb 2020

Cite this Entry

“Seamount.” Dictionary, Merriam-Webster, Accessed 19 Feb. 2020.

More from Merriam-Webster on seamount

Rhyming Dictionary: Words that rhyme with seamount Encyclopedia article about seamount

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