noun
EXAMPLES FROM CORPUS
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Here is a Roman theatre built over barrel-vaulted substructures but gently resting in part against the hillside.
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It has a pretty standard crime-fiction substructure that provides the felt on which the characters shoot their various games of pool.
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Lineages of descent from a female ancestor are thus prime substructures composing a macaque troop.
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The fine early baroque church has substructures remaining of Romanesque date and style.