Substratum

//səbˈstrɑ.təm// noun

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

Etymology

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

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