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
Walter SullivanExamples of seafloor in a Sentence
Recent Examples on the Web
The devices will remain on the seafloor, recording the ocean soundscape, until the ice melts again next summer.
—Stephanie Hanes, The Christian Science Monitor, 12 Dec. 2024
The ship is operated through the non-profit Ocean Exploration Trust, an organization devoted to seafloor exploration.
—Amanda Kooser, Forbes, 6 Dec. 2024
Related article Scientists make surprise discovery of life in the seafloor’s ‘underworld’
Airborne microplastics have been found all over the globe, even in the Arctic and other remote locations.
—Taylor Nicioli, CNN, 17 Oct. 2024
When the seafloor is covered in algae, larval coral has nowhere to develop.
—Benji Jones, Vox, 8 Oct. 2024
See all Example Sentences for seafloor 
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Stephanie Hanes, The Christian Science Monitor, 12 Dec. 2024
The ship is operated through the non-profit Ocean Exploration Trust, an organization devoted to seafloor exploration.
—Amanda Kooser, Forbes, 6 Dec. 2024
Related article Scientists make surprise discovery of life in the seafloor’s ‘underworld’
Airborne microplastics have been found all over the globe, even in the Arctic and other remote locations.
—Taylor Nicioli, CNN, 17 Oct. 2024
When the seafloor is covered in algae, larval coral has nowhere to develop.
—Benji Jones, Vox, 8 Oct. 2024
See all Example Sentences for seafloor
Dictionary Entries Near seafloor
Cite this Entry
“Seafloor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seafloor. Accessed 23 Dec. 2024.
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