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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Example Sentences
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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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All living Gaza hostages are now free 20 living hostages were returned to Israel by Hamas after being held in underground tunnels with little food, water, or medical care for two years.—
Diane Brady,
Fortune,
14 Oct. 2025
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Just as sophisticated as Hamas, which built hundreds of miles of underground tunnels as part of its preparations for war with Israel?—
Sal Rodriguez,
Oc Register,
13 Oct. 2025
Adjective
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In one passage, the cameras follow water down a shower drain and into a cavernous subterranean universe; in another, Mike tumbles through a sky of stars.—
Carrie Battan,
Vulture,
6 Oct. 2025
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Unable to plausibly explain to the authorities what happened — or why she’s covered in her friends’ blood — Sarah is forced back to the subterranean depths to help locate her five missing companions.—
Caitlin White,
Variety,
3 Oct. 2025
Cite this Entry
“Subsurface.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/subsurface. Accessed 16 Oct. 2025.
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