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
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This carbon from the sky is then carried by rivers to the sea where it’s laid down on the seafloor as carbonate rocks like limestone.
—Peter Brannen, Quanta Magazine, 15 Sep. 2025
An ocean-going hopper dredge pulls sand from deposits on the seafloor, usually at depths of 30 feet or more.
—Phil Diehl, San Diego Union-Tribune, 15 Sep. 2025
Secret undersea freshwater aquifers This year’s offshore drilling campaign off New England didn’t just infer freshwater under the Atlantic seafloor.
—Kaif Shaikh, Interesting Engineering, 11 Sep. 2025
Another is that undersea groundwater that seeps out to the seafloor may supply nutrients vital to the ecosystem, and that could be upset.
—Rodrique Ngowi, Fortune, 7 Sep. 2025
See All Example Sentences for seafloor
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Peter Brannen, Quanta Magazine, 15 Sep. 2025
An ocean-going hopper dredge pulls sand from deposits on the seafloor, usually at depths of 30 feet or more.
—Phil Diehl, San Diego Union-Tribune, 15 Sep. 2025
Secret undersea freshwater aquifers This year’s offshore drilling campaign off New England didn’t just infer freshwater under the Atlantic seafloor.
—Kaif Shaikh, Interesting Engineering, 11 Sep. 2025
Another is that undersea groundwater that seeps out to the seafloor may supply nutrients vital to the ecosystem, and that could be upset.
—Rodrique Ngowi, Fortune, 7 Sep. 2025
See All Example Sentences for seafloor
Cite this Entry
“Seafloor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seafloor. Accessed 17 Sep. 2025.
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