Where does “*atra” come from?
*atra (Proto-Finno-Ugric) comes from Proto-Germanic arþrą, from Proto-Indo-European h₂érh₃trom, from Proto-Indo-European h₂erh₃-, from Proto-Indo-European h₁er- — earth.
Ancestry of “*atra”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Germanic | arþrą | plough |
| 2 | Proto-Indo-European | h₂érh₃trom | plough, ard |
| 3 | Proto-Indo-European | h₂erh₃- | to plough |
| 4 | Proto-Indo-European | h₁er- | earth |