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sub-surface

British  

noun

  1. the layer just below the surface of water, the earth, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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They said it handled "the research, development, and production of a wide range of naval weaponry, including surface and sub-surface vessels, manned and unmanned equipment, as well as engines and weapons".

From Barron's • Mar. 28, 2026

As the oceans rise, that sub-surface saltwater pushes farther inland, and wells that have delivered pure water for generations can suddenly turn salty.

From Science Daily • Nov. 2, 2023

Siegel compared this to humans intentionally annihilating a group of single-celled organisms in Europa's sub-surface oceans.

From Salon • Oct. 28, 2023

The document calls for more powerful long-range missiles, the extension of bases across Northern Australia and a focus on building up naval surface and sub-surface capabilities.

From Washington Times • Apr. 26, 2023

Large fields of oil and natural gas are the most important sub-surface assets.

From Area Handbook for Romania by Bernier, Donald W.

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