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subsea

American  
[suhb-see, suhb-see] / sʌbˈsi, ˈsʌbˌsi /

adjective

  1. occurring, working, etc., under the sea or ocean.

    a subsea specialist in oil rigs.


Etymology

Origin of subsea

sub- + sea

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Hsieh’s group is also building a wireless network using Meshtastic, an open-source technology that uses off-grid texting devices, for civilians to communicate even if China cuts the subsea cables.

From The Wall Street Journal • Mar. 19, 2026

Oil is pumped to the island through subsea pipelines and stored in massive storage facilities before being loaded onto tankers.

From The Wall Street Journal • Mar. 14, 2026

A subsea telecoms cable between Greenland and Denmark will also be built.

From Barron's • Jan. 14, 2026

He also noted that it could be helpful for U.S. refineries that use the heavy oil Venezuela produces and for subsea and oil services companies that could be called upon.

From MarketWatch • Jan. 3, 2026

Down under the waters of the Long Island Sound she was taken in a glass-walled subsea vessel, where in a green and wavering world, quaint and curious sea-things ogled her and wiggled suddenly away.

From "I, Robot" by Isaac Asimov

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