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 deposit would have been on the seafloor when it was formed during the Cretaceous period.
—Sara Hashemi, Smithsonian Magazine, 23 May 2025
What companies will actually perform the work to mine the seafloor?
—Victor Vescovo, Time, 22 May 2025
In the early 2020s, the iceberg broke away from the seafloor and began to drift.
—Samantha Mathewson, Space.com, 9 May 2025
Creatures inhabited every inch of the rocky seafloor, writhing in a patchwork of life.
—Maya Wei-Haas, New York Times, 2 May 2025
See All Example Sentences for seafloor
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Sara Hashemi, Smithsonian Magazine, 23 May 2025
What companies will actually perform the work to mine the seafloor?
—Victor Vescovo, Time, 22 May 2025
In the early 2020s, the iceberg broke away from the seafloor and began to drift.
—Samantha Mathewson, Space.com, 9 May 2025
Creatures inhabited every inch of the rocky seafloor, writhing in a patchwork of life.
—Maya Wei-Haas, New York Times, 2 May 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 27 May. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share