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English definition of “substructure”


noun [C]     /ˈsʌbˌstrʌk.tʃər/ US  /-tʃɚ/
a firm structure that supports something built on top of it: The explosion damaged the bridge , but the substructure remained intact .Frames and structures
(Definition of substructure noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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