Subgrade Definition

sŭbgrād
noun
A layer of rock or earth leveled and graded for a foundation, as of a road.
Webster's New World

Other Word Forms of Subgrade

Noun

Singular:
subgrade
Plural:
subgrades

Origin of Subgrade

  • sub- +"Ž grade

    From Wiktionary

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Unscrambles

subgrade