German word Reich comes from Proto-Indo-European *rog-, Proto-Indo-European *(o)reǵ-, Proto-Germanic - ją, and later Proto-Indo-European *h₃rḗǵs (King, ruler.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *rog- | Proto-Indo-European (ine) | |
| *(o)reǵ- | Proto-Indo-European (ine) | |
| - ją | Proto-Germanic (gem-pro) | |
| *h₃rḗǵs | Proto-Indo-European (ine) | King, ruler. |
| *rīgos | Proto-Celtic (cel-pro) | |
| *rīxs | Proto-Celtic (cel-pro) | King. |
| *rīgyo- | Proto-Celtic (cel-pro) | |
| *rīgiom | Proto-Celtic (cel-pro) | |
| *rīkiją | Proto-Germanic (gem-pro) | Realm, kingdom. Rulership, government, authority. |
| rīhhi | Old High German (goh) | |
| Reich | German (de) | Empire or significant State. Realm (also e.g. of plants) A surname.. The First Reich (the Holy Roman Empire). The Second Reich (until 1918). The Third Reich (1933 to 1945). |