as in underground
being, situated, or operating beneath the surface of the earth
a sandy wasteland that gave little hint of its subsurface wealth
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Recent Examples of subsurface
Evaluation protocols of subsurface measurements and training of all rig site personnel have improved the drilling economics of this geothermal project.
—
Ian Palmer, Forbes, 19 May 2022
Shallow pools of subsurface water froze and fractured the surface again and again.
—Joshua Hawkins, BGR, 22 Apr. 2022
This is an important scientific mission tasked with searching for ice at the south pole and using a one-meter drill to prospect for subsurface samples.
—Eric Berger, Ars Technica, 20 Apr. 2022
So Marco Mastrogiuseppe, a researcher on the Cassini team who had used instruments like RADAR to map subsurface water on Mars, decided to try something.
—Liz Kruesi, Discover Magazine, 28 Oct. 2015
See All Example Sentences for subsurface
Ian Palmer, Forbes, 19 May 2022
Shallow pools of subsurface water froze and fractured the surface again and again.
—Joshua Hawkins, BGR, 22 Apr. 2022
This is an important scientific mission tasked with searching for ice at the south pole and using a one-meter drill to prospect for subsurface samples.
—Eric Berger, Ars Technica, 20 Apr. 2022
So Marco Mastrogiuseppe, a researcher on the Cassini team who had used instruments like RADAR to map subsurface water on Mars, decided to try something.
—Liz Kruesi, Discover Magazine, 28 Oct. 2015
See All Example Sentences for subsurface
Recent Examples of Synonyms for subsurface
Adjective
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While the men managed to keep up their spirits, being underground for more than 10 days took an understandable physical toll.—
Kocha Olarn,
CNN Money,
30 May 2026
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Crews also will be replacing underground utilities, and constructing curbs and gutters, between 16th Street and 24th Street in Fruitland, and between 3rd Avenue and 6th Avenue in Payette, the release said.—
Rachel Roberts,
Idaho Statesman,
29 May 2026
Adjective
-
The house spans almost 5,400 square feet, plus an additional 2,200 square feet of finished subterranean space executed to the same standard as the rest of the house.—
Mark David,
Robb Report,
22 May 2026
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These subterranean passageways are significant in Hawaiian culture, providing shelter for the ancient communities and and being places for ceremonies and burials.—
Kathleen Wong,
USA Today,
20 May 2026
Cite this Entry
“Subsurface.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/subsurface. Accessed 5 Jun. 2026.
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