seamount

noun

sea·​mount ˈsē-ˌmau̇nt How to pronounce seamount (audio)
: a submarine mountain rising above the deep-sea floor

Examples of seamount in a Sentence

Recent Examples on the Web
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The second looks to obtain cobalt-rich crusts that have accumulated over millions of years on the tops of seamounts between depths of approximately 3,000 and 8,000 feet, by peeling these crusts off from the bedrock. Amber X. Chen, Smithsonian Magazine, 18 July 2025 Dusky sharks are usually coastal and associated with continental shelves, while Galapagos sharks prefer seamounts and remote islands. Melissa Cristina Márquez, Forbes.com, 16 July 2025 Underwater volcano lurks off the Oregon coast The massive undersea Axial seamount volcano reaches more than 3,600 feet above the seabed about 300 miles off Oregon. Janet Loehrke, USA Today, 29 May 2025 In the sneak peek clip, an array of ocean animals traverse great distances in search of food, including travelling to seamounts — underwater mountains up to three miles high. Kelli Bender, People.com, 5 June 2025 See All Example Sentences for seamount

Word History

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of seamount was in 1941

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Cite this Entry

“Seamount.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seamount. Accessed 21 Aug. 2025.

Kids Definition

seamount

noun
sea·​mount ˈsē-ˌmau̇nt How to pronounce seamount (audio)
: a submarine mountain

More from Merriam-Webster on seamount

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