Latin word ab- comes from Proto-Indo-European *apó
| Dictionary entry | Language | Definition |
|---|---|---|
| *apó | Proto-Indo-European (ine-pro) | |
| *ab | Proto-Italic (itc-pro) | |
| ab | Latin (lat) | (source of action or event) by, of. (time) after, since. At, on, in. From, away from, out of. |
| ab- | Latin (lat) | Absence of. At a distance. Completely, thoroughly. From, away, away from. More remote. Off. |