sea·floor | \ˈsē-ˌflȯr \

Definition of seafloor 

: seabed

Examples of seafloor in a Sentence

Recent Examples on the Web

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 Offshore oil platforms are in less jeopardy because their foundations are planted deeply in the seafloor, Bentley said. Tristan Baurick,, "Like the Louisiana coast, the Gulf seafloor is rapidly eroding, research finds," 5 Apr. 2018 Unlike other offshore wind farms, Hywind isn’t anchored to the seafloor. Avery Thompson, Popular Mechanics, "The First Floating Wind Farm Is Ridiculously Efficient," 6 Mar. 2018 Some of it gets consumed by fish and other animals swimming around in the water column, but there’s generally enough left over for some of it to fall down to the seafloor and nourish bottom feeders, such as clams and other shellfish. Chelsea Harvey, Scientific American, "Arctic Sea Ice Is Getting Younger. Here Is Why That Is a Problem.," 11 May 2018 Even worse, bacteria adds weight to pieces of plastic, making them more likely to fall to the seafloor and land on a reef. Veronique Greenwood, New York Times, "Billions of Plastic Pieces Litter Coral in Asia and Australia," 25 Jan. 2018 The New Orleans Advocate, citing court documents, reported that an investigation pointed to a leak in a piping system that is used to transport oil from a production well on the seafloor. Washington Post, "Wisconsin high court backs fired professor; Manafort’s attorneys want trial moved," 7 July 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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Last Updated

1 Oct 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

Comments on seafloor

What made you want to look up seafloor? Please tell us where you read or heard it (including the quote, if possible).


a state of commotion or excitement

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