superstratum [
`supɚ'stretəm]
n. 上层
superstratumsuperstrata[ noun ]- any stratum or layer superimposed on another
<noun.location>
- the language of a later invading people that is imposed on an indigenous population and contributes features to their language
<noun.communication>
Superstratum \Su`per*stra"tum\, n.; pl. {Superstrata}. [NL.: cf.
L. supersternere, superstratum, to spread upon. See {Super-},
and {Stratum}.]
A stratum, or layer, above another.