Usually means: Base layer beneath pavement structures.
Definitions Related words Mentions History
We found 15 dictionaries that define the word subgrade:

General (11 matching dictionaries)
  1. subgrade: Merriam-Webster
  2. subgrade: American Heritage Dictionary of the English Language
  3. subgrade: Collins English Dictionary
  4. subgrade: Wordnik
  5. Subgrade: InfoVisual Visual Dictionary
  6. subgrade: Wiktionary
  7. subgrade: Webster's New World College Dictionary, 4th Ed.
  8. subgrade: Infoplease Dictionary
  9. subgrade: Dictionary.com
  10. Subgrade: Wikipedia, the Free Encyclopedia
  11. subgrade: TheFreeDictionary.com

Business (2 matching dictionaries)
  1. Construction Term Glossary (No longer online)
  2. subgrade: Legal dictionary

Computing (1 matching dictionary)
  1. subgrade: Encyclopedia

Tech (1 matching dictionary)
  1. AUTOMOTIVE TERMS (No longer online)

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Definitions from Wiktionary (subgrade)

▸ noun:  The layer of native soil on which the foundation of a road is laid.

Similar:
roadbase, trackbed, dirt road, substructure, slab on grade, track bed, substrate, grade, groundsel, chaussée, more...

Opposite:
superstructure, overpass, bridge, viaduct

Types:
A-1, A-2, A-3, A-4, A-5, more...

Adjectives:
prepared, soft, compacted, finished, natural, elastic, frozen, weak, underlying, poor, dry

▸ Words similar to subgrade

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▸ Popular adjectives describing subgrade

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▸ Rhymes of subgrade

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Similar:
roadbase, trackbed, dirt road, substructure, slab on grade, track bed, substrate, grade, groundsel, chaussée, more...

Opposite:
superstructure, overpass, bridge, viaduct

Types:
A-1, A-2, A-3, A-4, A-5, more...

Adjectives:
prepared, soft, compacted, finished, natural, elastic, frozen, weak, underlying, poor, dry



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