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Noun: superstratum  'soo-pu(r),straa-tum or 'soo-pu(r),strey-tum
  1. Any stratum or layer superimposed on another
    - superstrate
  2. The language of a later invading people that is imposed on an indigenous population and contributes features to their language
    - superstrate

Derived forms: superstratums

Type of: language, linguistic communication, stratum

Encyclopedia: Superstratum