understratum

U1N1D2E1R1S1T1R1A1T1U1M3

noun

The layer, or stratum, of earth on which the soil rests; the subsoil.

Scrabble 15
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

noununderstratum (plural understratums or understrata)

plural understratums · plural understrata

  1. The layer, or stratum, of earth on which the soil rests; the subsoil.

Origin

From under- + stratum.

Full word history & related roots →
Cite this entry
APA

understratum. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/understratum

MLA

“understratum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/understratum. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “understratum,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/understratum.

Source: understratum on Wiktionary, CC BY-SA 4.0.