Where does “a viso” come from?

a viso (Italian) comes from Italian viso, from Latin visum, from Latin vīsō, from Latin videō, from Proto-Italic widēō, from Proto-Indo-European weyd- — to see.

Ancestry of “a viso”, step by step

Step	Language	Word	Meaning
1	Italian	viso	face
2	Latin	visum	vision, mental image; nominative neuter singular...
3	Latin	vīsō	to look at, look into, stare at, view
4	Latin	videō	to see, perceive; look (at)
5	Proto-Italic	widēō	see
6	Proto-Indo-European	weyd-	to see

Every word from Proto-Indo-European weyd- →Every word from Proto-Italic widēō →Every word from Latin videō →