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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Using metal detectors and magnetometers, the team was able to locate large bits of steel and iron protruding from the seafloor that turned out to be parts of the frame and windlass, the machine used to reel in the anchor.
—Kameryn Griesser, CNN Money, 16 May 2025
This is different from mapping, which can measure seafloor topography with or without visual data collection.
—Gayoung Lee, Scientific American, 9 May 2025
Topline The Axial Seamount, an underwater volcano located off the Pacific Northwest coast that last erupted in 2015 and spewed several miles of lava along the seafloor, could be preparing to erupt soon, according to scientists observing seismic activity in the area.
—Siladitya Ray, Forbes.com, 9 May 2025
Listen to this article The famous mini research submarine Alvin arrived in San Diego on Thursday at the end of a mission in which its tiny crew witnessed the aftermath of a volcanic eruption on the seafloor while traveling 8,200 feet deep in the Pacific Ocean.
—Gary Robbins, San Diego Union-Tribune, 8 May 2025
See All Example Sentences for seafloor
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Kameryn Griesser, CNN Money, 16 May 2025
This is different from mapping, which can measure seafloor topography with or without visual data collection.
—Gayoung Lee, Scientific American, 9 May 2025
Topline The Axial Seamount, an underwater volcano located off the Pacific Northwest coast that last erupted in 2015 and spewed several miles of lava along the seafloor, could be preparing to erupt soon, according to scientists observing seismic activity in the area.
—Siladitya Ray, Forbes.com, 9 May 2025
Listen to this article The famous mini research submarine Alvin arrived in San Diego on Thursday at the end of a mission in which its tiny crew witnessed the aftermath of a volcanic eruption on the seafloor while traveling 8,200 feet deep in the Pacific Ocean.
—Gary Robbins, San Diego Union-Tribune, 8 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 20 Jun. 2025.
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