Word.ws English Dictionary

subgrade

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

Noun

subgrade (plural subgrades)

  1. The layer of native soil on which the foundation of a road is laid.
  2. (systematics) A taxon ranking immediately below grade.

Forms of subgrade

pluralsubgrades

Origin of subgrade

From sub- + grade.

Questions about subgrade

What does subgrade mean?
Subgrade means the layer of native soil on which the foundation of a road is laid.
What part of speech is subgrade?
Subgrade is a noun.
What is the plural of subgrade?
The plural of subgrade is subgrades.

Words near subgrade in the dictionary

  1. subgovernments
  2. subgovernor
  3. subgovernorate
  4. subgovernorates
  5. subgovernors
  6. subgrade
  7. subgrades
  8. subgradient
  9. subgradients
  10. subgraduate
  11. subgraduates

Source and license

Adapted from Wiktionary: subgrade (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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