sea·​floor | \ˈsē-ˌflȯr \

Definition of seafloor 

: seabed

Examples of seafloor in a Sentence

Recent Examples on the Web

The researchers were filming regions of the seafloor off the eastern coast of Antarctica looking for vulnerable marine habitats and ecosystems. Avery Thompson, Popular Mechanics, "Mysterious 'Headless Chicken Monster' Spotted in Ocean Near Antarctica," 22 Oct. 2018 Crew members said the search was challenging because the seafloor at about 300 feet in depth was soft and muddy. Sandi Doughton, The Seattle Times, "Meteorite search off the Washington coast recovers two small fragments," 3 July 2018 Some research groups, for example, are using more sensitive versions of the same GPS systems that are ubiquitous in car navigation systems and smartphones to accurately measure real-time motion of the seafloor. Bryn Nelson /, NBC News, "Our tsunami warning system is faulty. Can these scientists fix it?," 17 May 2018 In Southwest Pass and Pass-a-Loutre, the seafloor has been retreating by about 65 feet per year since 1979. Tristan Baurick,, "Like the Louisiana coast, the Gulf seafloor is rapidly eroding, research finds," 5 Apr. 2018 Just as the search for Malaysia Airlines Flight 370 revealed that the surface of the moon was better mapped than the Indian Ocean seafloor, the cave-rescue attempt shows that much beneath our feet is a mystery. Jake Maxwell Watts, WSJ, "What Lies Beneath? Vague Mapping Complicates Thai Cave Rescue," 8 July 2018 What that generates is a greater concentration of pollutants in the seafloor and in the food chain. Photographs And Text By Dado Galdieri, New York Times, "‘Sentinel’ Dolphins Die in Brazil Bay. Some Worry a Way of Life Has, Too.," 2 Apr. 2018 These extreme vibrations may have forced more magma than usual out of the cracks in the seafloor. Sophie Weiner, Popular Mechanics, "Dinosaur-Killing Asteroid May Have Also Triggered Undersea Volcano Eruptions," 9 Feb. 2018 Just last year, New Zealand granted permission to a company to begin mining iron ore from the seafloor. Jason Daley, Smithsonian, "Hundreds of Blue Whales Are Permanent Residents Off New Zealand’s Coasts," 18 May 2018

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

1855, in the meaning defined above

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12 Nov 2018

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The first known use of seafloor was in 1855

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English Language Learners Definition of seafloor

: the ground that is at the bottom of the sea

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Nglish: Translation of seafloor for Spanish Speakers

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