Latin word porro comes from Proto-Indo-European *pró (Toward, leading to.), Proto-Indo-European *pr̥-

Detailed word origin of porro

Dictionary entry	Language	Definition
*pró	Proto-Indo-European (ine-pro)	Toward, leading to.
*pr̥-	Proto-Indo-European (ine-pro)
*pró	Proto-Hellenic (grk-pro)
πρῶτος	Ancient Greek (to 1453) (grc)
πρόσω	Ancient Greek (to 1453) (grc)
porro	Latin (lat)	Further. Onwards.

Words with the same origin as porro