substructure

noun

sub·​struc·​ture ˈsəb-ˌstrək-chər How to pronounce substructure (audio)
: an underlying or supporting part of a structure
substructural adjective

Examples of substructure in a Sentence

The bridge's substructure was damaged.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Every two years the bridge undergoes a hands-on inspection of the superstructure and substructure and is given a rating, DOT officials said, according to records about the project and the meeting. Sean Krofssik, Hartford Courant, 2 June 2025 The consortium led by GRK Suomi includes Finnish, Estonian, French and Swedish partners taking charge of substructure and superstructure works for the Ülemiste–Pärnu and Tootsi–Pärnu segments. Theo Burman, MSNBC Newsweek, 29 May 2025 In the case of Calakmul, the substructure of the Structure II was also visited. Uriel Blanco, CNN Money, 14 May 2025 The substructure covers 140 hectares with a basement depth of up to 28 metres, equivalent to about 5,200 Olympic-sized swimming pools put together. Ian Sayson, Forbes.com, 6 May 2025 See All Example Sentences for substructure

Word History

First Known Use

1726, in the meaning defined above

Time Traveler
The first known use of substructure was in 1726

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Cite this Entry

“Substructure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/substructure. Accessed 7 Jun. 2025.

Kids Definition

substructure

noun
sub·​struc·​ture ˈsəb-ˌstrək-chər How to pronounce substructure (audio)
: an underlying or supporting part of a structure

Medical Definition

substructure

noun
sub·​struc·​ture ˈsəb-ˌstrək-chər How to pronounce substructure (audio)
: an underlying or supporting structure
substructural adjective

More from Merriam-Webster on substructure

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