erweit
Erweit is a term that does not have a widely recognized standalone meaning in standard reference works. In practical use, it most often appears as part of longer German words or as a potential misspelling of related forms. Because it lacks a fixed dictionary sense, its interpretation depends on context.
In German grammar, the root related to expansion is erweit-, from the verb erweitern, meaning to expand,
As a proper noun, there are no widely cited uses of Erweit in major encyclopedias or geographies.
If you encounter the word Erweit outside of this guidance, assess whether it is intended as the