Where does “lautianu” come from?

lautianu (Vulgar Latin) comes from Latin lautus, from Latin lavō, from Proto-Italic lawaō, from Proto-Indo-European léwh₃eti, from Proto-Indo-European lewh₃- — to wash.

Ancestry of “lautianu”, step by step

Step	Language	Word	Meaning
1	Latin	lautus	washed, bathed, having been washed; elegant,...
2	Latin	lavō	to wash, bathe
3	Proto-Italic	lawaō	—
4	Proto-Indo-European	léwh₃eti	—
5	Proto-Indo-European	lewh₃-	to wash

Words derived from “lautianu”

loução
louzán
Louzao

Every word from Proto-Indo-European lewh₃- →Every word from Proto-Indo-European léwh₃eti →Every word from Proto-Italic lawaō →