as in underside
the side or part facing downward from something
painted the undersurface of the plane blue
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Recent Examples of undersurface
Pale green eggs are laid in clusters near the food source with each egg suspended at the end of slender silken threads attached to the undersurface of a leaf.
—
Rita Perwich, San Diego Union-Tribune, 1 July 2023
Scientists observed a beetle walking upside-down on the undersurface of a pool of water.
—New York Times, 26 July 2021
The spots enlarge and are mirrored on the undersurface of the leaf with a white downy growth.
—The Editors Of Organic Life, Good Housekeeping, 21 July 2015
Rita Perwich, San Diego Union-Tribune, 1 July 2023
Scientists observed a beetle walking upside-down on the undersurface of a pool of water.
—New York Times, 26 July 2021
The spots enlarge and are mirrored on the undersurface of the leaf with a white downy growth.
—The Editors Of Organic Life, Good Housekeeping, 21 July 2015
Recent Examples of Synonyms for undersurface
Noun
-
Add beef in an even layer and cook, undisturbed, until deeply browned on underside, about 5 minutes.—
Kimberly Holland,
Southern Living,
25 Oct. 2025
-
Secured by six snaps, the removable top panel features nylon mesh on its underside to provide similar dust protection to the bottom filter.—
PC Magazine,
PC Magazine,
18 Oct. 2025
Noun
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Austin ranked last with 166 gallons per day per capita, and the Dallas-Fort Worth area ranked third from the bottom with less than 200 gallons per day per capita.—
Matthew Adams,
Fort Worth Star-Telegram,
21 Oct. 2025
-
At bottom, that’s the thing that grinds my gears.—
Literary Hub,
Literary Hub,
21 Oct. 2025
Cite this Entry
“Undersurface.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undersurface. Accessed 28 Oct. 2025.
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