undersea

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adjective un·der·sea \ ˌən-dər-ˈsē \

Definition of undersea

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

See undersea defined for English-language learners

See undersea defined for kids

Examples of undersea in a Sentence

They are conducting undersea research.

Recent Examples of undersea from the Web

Some people have never fully understood people’s fixation with Cthulhu, the mysterious, undersea, cult-inspiring, cosmic creature dreamed up by early 20th-century Rhode Island writer H.P. Lovecraft — and to be honest, neither have I.

— brendan kiley, The Seattle Times, "Performance picks: ‘Mud,’ ‘Fun Home,’ ‘Cthulhu: The Musical’ and UMO’s ‘Resistance Cabaret’," 19 July 2017
The Coast Guard declined to release details, but the exercise is taking place around an undersea testing range operated by the Naval Surface Warfare Center Carderock Division’s South Florida Ocean Measurement Facility.

— david fleshler, Sun-Sentinel.com, "Heightened security for naval exercise off Fort Lauderdale," 19 July 2017
The bill also directs the Pentagon to help Taiwan develop an indigenous undersea warfare program and recommends strengthened strategic cooperation with Taipei.

— reuters, Fortune, "U.S. Angers China By Making a $1.42 Billion Arms Deal With Taiwan," 29 June 2017
Atlantis Ignites: The park’s water coaster, Journey to Atlantis, takes guests on an a 100-foot projection mapping undersea adventure.

— carolina gusman, sandiegouniontribune.com, "SeaWorld’s Electric Ocean shines light on underwater world," 28 June 2017
The implants, raised in undersea nurseries, are small but are growing steadily.

— the washington post, NOLA.com, "As coral disappears, so will the Florida Keys' economy," 25 June 2017
The newsletter dated June 19, 2017, misspelled and misstated the source of the name of an undersea volcano.

— rosa inocencio smith, The Atlantic, "The Atlantic Daily: Dems' Vital Vote," 20 June 2017
The centerpiece is the East-Med Pipeline, which would bring gas from Israeli fields to Greece and Italy through what would be the world’s longest undersea connection.

— jonathan ferziger, Bloomberg.com, "Israel-Europe Gas Pipeline Emerging From Fantasy, Netanyahu Says," 15 June 2017
While on board, riders will use a digital dashboard to learn about and answer questions about undersea life.

— robert niles, The Mercury News, "Summer 2017: What’s new at amusement parks in Southern California," 6 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'undersea.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of undersea

1613

undersea

play

adverb \ ˌən-dər-ˈsēz \

variants: or underseas

Definition of undersea

:under the sea :beneath the surface of the sea

photographs taken undersea

First Known Use of undersea

1645

UNDERSEA Defined for English Language Learners

undersea

play

adjective

Definition of undersea for English Language Learners

: found, done, or used below the surface of the sea

UNDERSEA Defined for Kids

undersea

play

adjective un·der·sea \ ˈən-dər-ˈsē \

Definition of undersea for Students

1 :being or done under the sea or under the surface of the sea

an undersea volcano

2 :used under the surface of the sea

an undersea vessel

Learn More about undersea

See words that rhyme with undersea Spanish Central: Translation of undersea Nglish: Translation of undersea for Spanish speakers

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undersea

Definition of undersea

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undersea

Definition of undersea

First Known Use of undersea

UNDERSEA Defined for English Language Learners

undersea

Definition of undersea for English Language Learners

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undersea

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undersea

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UNDERSEA Defined for English Language Learners

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Definition of undersea for English Language Learners

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