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 In 2005, the attack submarine USS San Francisco collided with an underwater seamount at the equivalent of 30 miles an hour—and was still able to sail to Guam for repairs. Kyle Mizokami, Popular Mechanics, "Why Did the USS Thresher Sink? Finally, the Navy Is Being Forced to Tell Us," 10 Mar. 2020 Salomé recently received a National Geographic Early Career Grant to lead a study exploring bajos, or shallow seamounts, which are important fishing areas for the local artisanal fleet in the Galápagos. National Geographic, "Salomé Buglass," 20 Sep. 2019 And 600 kilometers to the east, there are more recent basalt seamounts at the bottom of the ocean. Scott K. Johnson, Ars Technica, "Volcanoes where they shouldn’t be? Maybe it’s a mantle sponge," 28 Feb. 2020 Working with the Seychelles and Maldives governments, the five-week expedition beginning in March is targeting seamounts — vast underwater mountains that rise thousands of meters from the sea floor. Washington Post, "Exploring the Indian Ocean’s ‘Midnight Zone’," 5 Feb. 2020 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

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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Cite this Entry

“Seamount.” Dictionary, Merriam-Webster, Accessed 27 Feb. 2021.

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