seafloor

noun

sea·​floor ˈsē-ˌflȯr How to pronounce seafloor (audio)
variants or less commonly sea floor
plural seafloors also sea floors
: the floor of a sea or ocean : seabed
The Earth's crust, in this view, is divided into several immense plates that make up the continents and seafloors, and that all float on a hot, plastic, subterranean "mantle."Walter Sullivan

Examples of seafloor in a Sentence

Recent Examples on the Web
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The rupturing fault created an approximately 20 meters (or 65 feet) high new scarp on the seafloor, which in turns caused the water displacement and a series of six tsunami moving both east towards Sumatra, and west towards Sri Lanka, India and Africa—eventually reaching the Atlantic and Pacific. David Bressan, Forbes, 26 Dec. 2024 The study, published in Science Advances, examined microbes from up to 3 miles underground and 1,600 feet beneath the seafloor. Benedict Cosgrove, Newsweek, 19 Dec. 2024 Anglerfish ancestors lived on the seafloor and maneuvered around using specialized stout fins, much like their close relatives the batfishes and frogfishes. Danielle Hall, Smithsonian Magazine, 24 Dec. 2024 After first calving, or breaking off, from Antarctica's Filchner Ice Shelf in 1986, the iceberg spent some 30 years grounded in the seafloor of the Weddell Sea. Manuela López Restrepo, NPR, 20 Dec. 2024 See all Example Sentences for seafloor 

Word History

First Known Use

1853, in the meaning defined above

Time Traveler
The first known use of seafloor was in 1853

Dictionary Entries Near seafloor

Cite this Entry

“Seafloor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seafloor. Accessed 6 Jan. 2025.

Kids Definition

seafloor

noun
sea·​floor -ˌflō(ə)r How to pronounce seafloor (audio)
-ˌflȯ(ə)r
: seabed

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