Where does “*sa-” come from?
*sa- (Proto-Indo-Aryan) comes from Proto-Indo-Iranian sa-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.
Ancestry of “*sa-”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Indo-Iranian | sa- | together, co- |
| 2 | Proto-Indo-European | sm̥- | one; with, together |
| 3 | Proto-Indo-European | sem- | together, one |