Substratum

//səbˈstrɑ.təm// noun

noun ·Moderate ·College level

Definitions

Noun
  1. 1
    A layer that lies underneath another.
  2. 2
    an indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population wordnet
  3. 3
    The underlying cause or basis of something. figuratively
  4. 4
    any stratum or layer lying underneath another wordnet
  5. 5
    A substrate.
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  1. 6
    a surface on which an organism grows or is attached wordnet

Synonyms

All synonyms
airatomatomic particlesbandbasebasement

Example

More examples

"The substratum is unstable and requires special building practices."

Etymology

Borrowed from New Latin substratum, nominalisation of the neuter of Latin substrātus, perfect passive participle of substernō.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.