seabed

noun

sea·​bed ˈsē-ˌbed How to pronounce seabed (audio)
variants or less commonly sea bed
plural seabeds also sea beds
: the floor of a sea or ocean : seafloor
This atoll is the summit of an undersea volcano that rises from the seabed 10,000 feet below the surface.Kennedy Warne

Examples of seabed in a Sentence

Recent Examples on the Web
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Arctic lands and seabeds also hold vast quantities of critical minerals and energy resources, and Arctic waters are becoming an increasingly important source of food as warming ocean temperatures compel fish to swim north seeking cooler waters. Michael Albertus, Foreign Affairs, 24 June 2025 The article notes that learning more about the deep sea would be useful in many ways, including for developing responsible seabed mining practices and for understanding how climate change and human activities are affecting oceans. Jeremy Engle, New York Times, 16 May 2025 The International Seabed Authority is preparing to make key decisions on future seabed mining in July 2025, including rules and guidelines relating to mining waste, discharge depths and environmental protection. Alexus Cazares-Nuesser, The Conversation, 25 Mar. 2025 The Trump Administration signed an executive order late last month aiming to fast-track approval for seabed mining critical minerals found in the deep sea. Simmone Shah, Time, 7 May 2025 See All Example Sentences for seabed

Word History

First Known Use

1838, in the meaning defined above

Time Traveler
The first known use of seabed was in 1838

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Cite this Entry

“Seabed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seabed. Accessed 18 Jul. 2025.

Kids Definition

seabed

noun
sea·​bed ˈsē-ˌbed How to pronounce seabed (audio)
: the floor of a sea or ocean

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