understratum
understratum · understratums · understrata
The layer, or stratum, of earth on which the soil restsThe layer, or stratum, of earth on which the soil rests; the subsoil.
Meaning
1 sensesThe layer, or stratum, of earth on which the soil rests; the subsoil.
Origin
From under- + stratum.From under- + stratum.
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Forms
plural: understratums / understrata| Singular | understratum |
|---|---|
| Plural | understratums / understrata |
regular
Lessons for this word
1 lessons- A1Plural nouns — Because its plural is irregular