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
When the undersurface of the first tablet was revealed, Dr. White got chills.
—Joanna Klein, New York Times, 7 Mar. 2017
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
When the undersurface of the first tablet was revealed, Dr. White got chills.
—Joanna Klein, New York Times, 7 Mar. 2017
Recent Examples of Synonyms for undersurface
Noun
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Like the official Pro Controller, this features programmable buttons on the underside of the hand grips.—
Matt Kamen,
Wired News,
20 July 2025
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Lawson points at what looks like nothing more than a pale speck on the underside of a leaf.—
Joseph States,
Chicago Tribune,
17 July 2025
Noun
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Here's which other states are at the bottom of the list.—
Allison Kiehl,
Nashville Tennessean,
15 July 2025
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The attorney said that, after police arrived, there was a low-speed collision, Byron Jackson and an officer ended up at the bottom of a ravine and the South Carolina resident was handcuffed.—
Tesfaye Negussie,
ABC News,
15 July 2025
Cite this Entry
“Undersurface.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undersurface. Accessed 30 Jul. 2025.
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