Latin word pro- comes from Proto-Indo-European *pró (Toward, leading to.), Proto-Germanic *feraną, Proto-Indo-European *per (Around. Through.), Proto-Indo-European *bʰowHéyeti
| Dictionary entry | Language | Definition |
|---|---|---|
| *pró | Proto-Indo-European (ine) | Toward, leading to. |
| *feraną | Proto-Germanic (gem-pro) | |
| *per | Proto-Indo-European (ine) | Around. Through. |
| *bʰowHéyeti | Proto-Indo-European (ine) | |
| *prō | Proto-Italic (itc-pro) | |
| *per | Proto-Italic (itc-pro) | |
| *prē- | Proto-Indo-European (ine) | |
| per | Latin (lat) | (with accusative) during. (with accusative) through, by means of. |
| pro- | Latin (lat) | (prefixed to verbs of utterance) in place of, on behalf of. (temporally) prior, fore-. Action directed forward or in front. Advantage. Bringing into being, forth, or into the open. Downward and forward movement. Forward direction, forward movement. Prominence. |