un·der·sea
ˌən-dər-ˈsē 
1
: being or carried on under the sea or under the surface of the sea
undersea oil deposits
undersea fighting
2
: designed for use under the surface of the sea
an undersea fleet
Examples of undersea in a Sentence
Adjective
They are conducting undersea research.
Recent Examples on the Web
Yvonne Villarreal, Los Angeles Times, 23 May 2025
Now Windward has analyzed its patterns to show how its favorite 'catch' is intelligence on undersea cables.
—Micah McCartney, MSNBC Newsweek, 21 May 2025
Related article Europe’s undersea infrastructure keeps getting damaged.
—Joseph Ataman, CNN Money, 20 May 2025
Observing an undersea volcanic eruption is no easy task.
—Kameryn Griesser, CNN Money, 8 May 2025
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Adjective
The climax of the season is a surfing safari to Cortes Bank, 100 miles off the coast of Southern California, where an undersea island creates huge waves with no land in sight.
—Yvonne Villarreal, Los Angeles Times, 23 May 2025
Now Windward has analyzed its patterns to show how its favorite 'catch' is intelligence on undersea cables.
—Micah McCartney, MSNBC Newsweek, 21 May 2025
Related article Europe’s undersea infrastructure keeps getting damaged.
—Joseph Ataman, CNN Money, 20 May 2025
Observing an undersea volcanic eruption is no easy task.
—Kameryn Griesser, CNN Money, 8 May 2025
See All Example Sentences for undersea
Cite this Entry
“Undersea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undersea. Accessed 5 Jun. 2025.
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