seabed

noun

sea·​bed ˈsē-ˌbed 

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

The technology is an autonomous underwater vehicle (AUV) paired with its own seabed docking station. — New Atlas, 5 July 2026

Naturally, the exploration of our planet, from seabed to stratosphere, is the focus of its new Museum of Exploration. — Fritz Hahn, Washington Post, 2 July 2026

But the rhenium that was bound to the organic carbon gets washed through rivers into the ocean, where it is incorporated into new seabed sediments. — Howard Lee, ArsTechnica, 26 June 2026

The hull has been optimized specifically for high-precision seabed mapping—one of the most important tools in modern oceanography—and, while not the sexiest feature, RV11000 will also carry the largest battery installation ever fitted on a ship. — Dea Jusufi, Forbes.com, 13 June 2026

Word History

First Known Use

1838, in the meaning defined above

Phrases Containing seabed

• the seabed

Rhymes for seabed

• abed
• ahead
• beachhead
• bedspread
• bedstead
• behead
• blackhead
• blockhead
• bloodshed
• bowhead
• breastfed
• bridgehead

Kids Definition

seabed

noun

sea·​bed ˈsē-ˌbed 

: the floor of a sea or ocean