sub·struc·ture | \ˈsəb-ˌstrək-chər \

Definition of substructure 

: an underlying or supporting part of a structure

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Other Words from substructure

substructural \ˈsəb-ˌstrək-chə-rəl, -shrəl \ adjective

Examples of substructure in a Sentence

The bridge's substructure was damaged.

Recent Examples on the Web

The home’s foundation is rock solid, built on a series of 39-foot pilings, rebar and a concrete substructure. David Lyons,, "Boca waterfront mansion a finalist in HGTV's 'Ultimate House Hunt'," 18 June 2018 So what looks on paper like a tremendous built-in infrastructure for moving illicit products across borders is actually a disparate, federalized organization of substructures with highly local, even competing, interests. Steven S. Dudley, Houston Chronicle, "MS-13 is a street gang, not a drug cartel. Why it matters in the US?," 16 Apr. 2018 The rehabilitation work includes removing and replacing the entire pavement and substructure as well as drainage. Peter Marteka, Courant Community, "Portion of Hebron Avenue Closed To Vehicular And Pedestrian Traffic," 9 Apr. 2018 The star's irregular dips might then be shadows cast by rings, gaps and other substructures in the transiting disk. Kimberly Cartier, Scientific American, "Have Aliens Built Huge Structures around Boyajian’s Star?," 1 May 2017 Structurally, the C_Two utilizes a carbon-fiber tub with a rear substructure and roof, both of carbon fiber, bonded to it. Tony Markovich, Car and Driver, "With 1888 HP, the Rimac C_Two Puts Croatia on the Supercar Map," 7 Mar. 2018 The project includes the removal of the existing bridge deck and the span's substructure. Kim Chatelain,, "Covington bridge to close 3 months for repairs," 25 Jan. 2018 The New York City Department of Transportation is planning more significant work to the bridge's towers, substructure, foot walks, main and suspender cables, and bridge steel structure beginning in 2019 and likely continuing through 2033. Keith Matheny, Detroit Free Press, "The Mackinac Bridge is turning 60 and still looking good: How long can it last?," 29 Oct. 2017 Corrosion on the metal walkway grating and substructures is beginning to accelerate. Rick Anderson,, "More than 160,000 non-native Atlantic salmon escaped into Washington waters in fish farm accident," 3 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'substructure.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of substructure

1726, in the meaning defined above

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The first known use of substructure was in 1726

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English Language Learners Definition of substructure

: a supporting part or structure that is below something


sub·struc·ture | \ˈsəb-ˌstrək-chər \

Medical Definition of substructure 

: an underlying or supporting structure

Other Words from substructure

substructural \-chə-rəl, -shrəl \ adjective

More from Merriam-Webster on substructure

Britannica English: Translation of substructure for Arabic Speakers

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