Sprachraum

noun2

1. •
   Language area, language zone; geographical region where a language is spoken

   • The networked world is typically envisioned as a globe-spanning English Sprachraum. — 2011
2. •
   the repertoire of language available to a given person

   • […] as an expansion of the language space, the Sprachraum. The language space of a child expands as his object relationships develop. — 1976