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substructure

noun

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Time Traveler for substructure

Time Traveler

The first known use of substructure was in 1726

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“Substructure.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/substructure. Accessed 22 Apr. 2021.

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Britannica English: Translation of substructure for Arabic Speakers

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