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
-
During extra time English striker Geoff Hurst unleashed a shot that hit the underside of the crossbar, bounced onto (or just behind, depending on your perspective) the goal line, and was cleared.—
Gitanjali Roy,
Encyclopedia Britannica,
3 June 2026
-
Lampard’s non-goal England were 2-1 down to Germany in the last 16 of the 2010 World Cup, Lampard lobbed goalkeeper Manuel Neuer, the ball bounced off the underside of the bar and landed well behind the goal line.—
Tim Spiers,
New York Times,
3 June 2026
Noun
-
The Rockies cut it to 6-1 on back-to-back doubles by Hunter Goodman and Troy Johnston in the fourth, but the Angels countered with Grissom’s two-run homer in the bottom of the inning for an 8-1 lead.—
Los Angeles Times,
Los Angeles Times,
4 June 2026
-
In the photos, Jenner accessorizes the pink bikini with a matching pink skirt with ruffles on the bottom.—
Lori A Bashian,
FOXNews.com,
3 June 2026
Cite this Entry
“Undersurface.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undersurface. Accessed 11 Jun. 2026.
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