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
Josh Hammer, Newsweek, 17 Feb. 2025
Related article Ships, sea drones and AI: How NATO is hardening its defense of critical Baltic undersea cables
The owners of the Silver Dania, the Silver Sea shipping group, told CNN they were not involved in damaging the cable.
—Caitlin Danaher, CNN, 31 Jan. 2025
If Garcia Swisher’s past as an undersea princess is somehow news to you, please enjoy this behind-the-scenes look back at her stint as Ariel:
So, what does the future hold for this couple?
—Andy Swift, TVLine, 23 Jan. 2025
With an average of about 200 cable faults a year, according to the International Cable Protection Committee, damage to undersea communications infrastructure is not uncommon.
—Mithil Aggarwal, NBC News, 14 Jan. 2025
See all Example Sentences for undersea 
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Adjective
Russia has been accused of engaging in suspicious maneuvers near key undersea communication cables, which are vital to global communication systems.
—Josh Hammer, Newsweek, 17 Feb. 2025
Related article Ships, sea drones and AI: How NATO is hardening its defense of critical Baltic undersea cables
The owners of the Silver Dania, the Silver Sea shipping group, told CNN they were not involved in damaging the cable.
—Caitlin Danaher, CNN, 31 Jan. 2025
If Garcia Swisher’s past as an undersea princess is somehow news to you, please enjoy this behind-the-scenes look back at her stint as Ariel:
So, what does the future hold for this couple?
—Andy Swift, TVLine, 23 Jan. 2025
With an average of about 200 cable faults a year, according to the International Cable Protection Committee, damage to undersea communications infrastructure is not uncommon.
—Mithil Aggarwal, NBC News, 14 Jan. 2025
See all Example Sentences for undersea
Dictionary Entries Near undersea
Cite this Entry
“Undersea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undersea. Accessed 20 Feb. 2025.
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