Meaning & use
substructure
The underlying structure or foundation that supports something built above it.
See it in a sentence
Engineers inspected the bridge's substructure carefully for signs of corrosion.
The substructure of the ancient temple survived long after its walls collapsed.
A note on using this word
Substructure is used both literally, for the foundation of a building or bridge, and figuratively, for a basic underlying framework.
Words with a similar meaning
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Words with an opposite meaning
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