subgrade
nounEtymology From sub- + grade.
1
The layer of native soil on which the foundation of a road is laid.
2
A taxon ranking immediately below grade.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun — 2 senses
Etymology From sub- + grade.
The layer of native soil on which the foundation of a road is laid.
A taxon ranking immediately below grade.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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