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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At Sunset Marquis in West Hollywood, guests can take guitars or arrange tours of the property's legendary underground recording studio, NightBird.—
Iona Brannon,
Travel + Leisure,
10 Nov. 2025
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Finland, for instance, is nearing completion of the world’s first permanent underground disposal site for its five reactors’ waste.—
Bob Woods,
CNBC,
9 Nov. 2025
Adjective
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The town of about 600 sits at the northern foothills of the Smoky Mountains and offers hiking, caverns and Silver Falls, the tallest subterranean cascade in the eastern United States, according to World Atlas.—
Craig Shoup,
Nashville Tennessean,
9 Nov. 2025
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Sweden has started construction on a similar project, and France, Canada and Switzerland are in the early stages of their subterranean disposal sites.—
Bob Woods,
CNBC,
9 Nov. 2025
Cite this Entry
“Subsurface.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/subsurface. Accessed 28 Nov. 2025.
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