Where does “prō” come from?
prō (Proto-Indo-European) comes from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.
prō (Proto-Indo-European): toward, leading to
Ancestry of “prō”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Indo-European | per- | before, in front; first; to go through |
| 2 | Proto-Indo-European | pr̥tós | passed , crossed |