substructure
noun
sub·struc·ture
ˈsəb-ˌstrək-chər 
: an underlying or supporting part of a structure
Examples of substructure in a Sentence
The bridge's substructure was damaged.
Recent Examples on the Web
Grillmair’s work had focused on uncovering the structure of the Milky Way, identifying faint stellar streams and substructures that make up the galactic halo surrounding our spiral galaxy, and helping reshape our understanding of how galaxies evolve, according to his website.
—
Clara Harter, Los Angeles Times, 20 Feb. 2026
To get the most out of a trip inside, book a special visit to the substructure (basically the backstage area where people and animals waited to be brought onstage), the third tier, and the belvedere via the Colosseum's website.
—Katie Parla, Condé Nast Traveler, 9 Feb. 2026
The substructure, or the portion that supports the deck where piers and abutments are located, is also in fair condition.
—Gloria Casas, Chicago Tribune, 20 Jan. 2026
Topalian has made doors up to 24 feet tall that require their own steel or aluminum substructure.
—Clio Chang, Curbed, 19 Nov. 2025
See All Example Sentences for substructure
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Clara Harter, Los Angeles Times, 20 Feb. 2026
To get the most out of a trip inside, book a special visit to the substructure (basically the backstage area where people and animals waited to be brought onstage), the third tier, and the belvedere via the Colosseum's website.
—Katie Parla, Condé Nast Traveler, 9 Feb. 2026
The substructure, or the portion that supports the deck where piers and abutments are located, is also in fair condition.
—Gloria Casas, Chicago Tribune, 20 Jan. 2026
Topalian has made doors up to 24 feet tall that require their own steel or aluminum substructure.
—Clio Chang, Curbed, 19 Nov. 2025
See All Example Sentences for substructure
Cite this Entry
“Substructure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/substructure. Accessed 21 Feb. 2026.
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substructure
noun
sub·struc·ture
ˈsəb-ˌstrək-chər
: an underlying or supporting part of a structure
Medical Definition
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