Meaning & use
subgrades
Last updated
the layers of natural soil or compacted ground beneath a road, pavement, or foundation, prepared to support the structure above
See it in a sentence
Engineers compacted the subgrades before laying the new highway's asphalt.
Poor subgrades can cause a driveway to crack and sink within a few years.
A note on using this word
A key term in civil engineering and road construction for the ground layer that supports everything built on top of it.
Words with a similar meaning
base soil
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