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ENGLISH · A WORD WITH POSSIBILITIES

substratum.

A layer that lies underneath another.

10 characters3 syllables approx.English language

Meaning & usage

noun/səbˈstrɑ.təm//səbˈstreɪ̯.təm/
  1. A layer that lies underneath another.

  2. The underlying cause or basis of something.

    figuratively
  3. A substrate.

Where this word comes from

Learned borrowing from New Latin substrātum, nominalisation of the neuter of Latin substrātus, perfect passive participle of substernō. By surface analysis, sub- + stratum.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.