undersea

[uhn-der-see]

adjective

1. located, carried on, or used under the surface of the sea.

   undersea life.

adverb

1. underseas.

undersea

/ ˈʌndəˌsiː /

adjective

1. below the surface of the sea

Word History and Origins

Origin of undersea¹

First recorded in 1605–15; under- + sea

Example Sentences

Suspicious drones have disrupted flights and hovered around military bases and critical infrastructure across Europe, and rogue ships dragging anchors have damaged undersea cables and pipelines in the Baltic Sea.

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The Channel Tunnel is an undersea tunnel linking southern England and northern France.

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The vessel has long been suspected of secretly mapping out Britain's undersea cables, where more than 90% of our data, including billions of dollars of financial transactions, are transferred.

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The ship is "designed for gathering intelligence and mapping our undersea cables", Healey told journalists.

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Some "shadow" ships are even suspected of undersea sabotage, illicit drone launches or "spoofing" their location data.

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Related Words

• submerged