sub·​struc·​ture | \ ˈsəb-ˌstrək-chər How to pronounce substructure (audio) \

Definition of substructure

: an underlying or supporting part of a structure

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Other Words from substructure

substructural \ ˈsəb-​ˌstrək-​chə-​rəl How to pronounce substructure (audio) , -​shrəl \ adjective

Examples of substructure in a Sentence

The bridge's substructure was damaged.
Recent Examples on the Web The lack of an inner substructure to strengthen the layers results in overall structural instability which allows the pastry cream to be forced outside. Gabriella Gershenson, Saveur, "The Structural Soundness of Your Favorite Desserts, According to Architects," 30 Jan. 2017 The Diamondbacks turf was rolled out over a crushed gravel substructure, whereas the Rangers will have solid cement beneath. Dallas News, "How the Rangers are preparing for Globe Life Field’s synthetic playing surface during spring training," 16 Feb. 2020 The warehouses are slowly sinking because of a failing seawall where fishermen deliver their catch, and a causeway substructure is so rotten it’s been closed to all traffic. USA TODAY, "Cold case cards, firework record, monkey treatment: News from around our 50 states," 11 Feb. 2020 In order to be rated poor, at least one component of the bridge — such as its deck, substructure or superstructure — will have a rating of 4 or less on a 0-9 scale., "Wayne County has struggled to inspect its bridges, state also under scrutiny," 31 Jan. 2020 The man was leaning against the substructure of a bridge, making waving motions with his hand. Bob Sandrick, cleveland, "High school classmates have oddball reunion; police draw weapons on man with handgun: Brook Park Police Blotter," 4 Oct. 2019 Beneath the game that gives the novel its plot, Raskin built a narrative substructure that consists of the intersecting identity crises experienced by the sixteen—sixteen! Jia Tolentino, The New Yorker, "“The Westing Game,” a Tribute to Labor That Became a Dark Comedy of American Capitalism," 13 June 2019 Because of this, art historians have previously used T-rays to look into the substructures of murals, frescoes, and paintings. William Herkewitz, Popular Mechanics, "A New Microscopic Camera Lets Us Peer Inside All the Things We Normally Can't See," 3 June 2016 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

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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Time Traveler for substructure

Time Traveler

The first known use of substructure was in 1726

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Cite this Entry

“Substructure.” Dictionary, Merriam-Webster, Accessed 19 Jan. 2021.

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More Definitions for substructure


How to pronounce substructure (audio)

English Language Learners Definition of substructure

: a supporting part or structure that is below something


sub·​struc·​ture | \ ˈsəb-ˌstrək-chər How to pronounce substructure (audio) \

Medical Definition of substructure

: an underlying or supporting structure

Other Words from substructure

substructural \ -​chə-​rəl, -​shrəl How to pronounce substructure (audio) \ adjective

More from Merriam-Webster on substructure

Thesaurus: All synonyms and antonyms for substructure

Britannica English: Translation of substructure for Arabic Speakers

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