Where does “urocromo” come from?

urocromo (Italian) comes from Italian uro, from Latin ūrus, from Proto-Germanic ūraz, from Proto-Indo-European ūsr- — aurochs; buffalo.

urocromo (Italian): urochrome

Definitions

urocromo traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Italian	uro	aurochs, urus
2	Latin	ūrus	aurochs (Bos primigenius)
3	Proto-Germanic	ūraz	aurochs
4	Proto-Indo-European	ūsr-	aurochs; buffalo

Step	Language	Word	Meaning
1	Italian	cromo	chromium; chrome; first-person singular present...
2	Ancient Greek	χρῶμᾰ	skin (esp. the human body)