undersea

1 of 2

adjective

un·​der·​sea ˌən-dər-ˈsē How to pronounce undersea (audio)
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

undersea

2 of 2

adverb

variants or underseas
: under the sea : beneath the surface of the sea
photographs taken undersea

Example Sentences

Adjective They are conducting undersea research.
Recent Examples on the Web
Adjective
As well as her Octonauts party — which saw True treated to a dessert wall, balloon arches and real undersea creatures — Kardashian's first born was also taken to Disneyland on her actual birthday by her mom. Kirsty Hatcher, Peoplemag, 14 Apr. 2023 Ariel is the youngest daughter of King Triton, ruler of the undersea kingdom of Atlantica. Marco Della Cava, USA TODAY, 13 Apr. 2023 Will Los Angeles take the unusual step of partnering with other power providers on the undersea cable, which could reduce costs to ratepayers and help bring the project to fruition? Sammy Roth, Los Angeles Times, 6 Apr. 2023 And in this modern era when large surface ships are vulnerable to long-range anti-ship missiles, the world’s global powers are doubling down on their undersea efforts. Alex Hollings, Popular Mechanics, 5 Apr. 2023 The undersea parcels that were up for auction Wednesday covered 114,000 square miles (295,000 square kilometers) an area larger than Arizona. Kevin Mcgill, Fortune, 29 Mar. 2023 Concerns over a Chinese invasion of Taiwan continue to mount with Beijing now suspected of involvement in damaging some of the island nation's undersea internet cables this week in another show of deliberate harassment. Caitlin Mcfall, Fox News, 10 Mar. 2023 China was steadily increasing the size of its undersea and surface fleet (including with ballistic-missile subs capable of hitting America from launch sites in the South China Sea), and Navy planners had decided to cut the buy of Triton maritime surveillance drones from 65 to 27. Loren Thompson, Forbes, 8 Mar. 2023 What did the undersea surveys show? George Petras, USA Today, 16 Feb. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'undersea.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

Adjective

1613, in the meaning defined at sense 1

Adverb

1645, in the meaning defined above

Time Traveler
The first known use of undersea was in 1613

Dictionary Entries Near undersea

Cite this Entry

“Undersea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undersea. Accessed 5 Jun. 2023.

Kids Definition

undersea

adjective
un·​der·​sea
ˈən-dər-ˈsē
1
: being or carried on under the sea or under the surface of the sea
undersea oil deposits
undersea warfare
2
: designed for use under the surface of the sea
undersea fleet

More from Merriam-Webster on undersea

Last Updated: - Updated example sentences
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