Where does “cinerastro” come from?

cinerastro (Italian) comes from Italian -astro, from Latin -astrum, from Latin -aster — pater + API → patraster.

cinerastro (Italian): ash-gray

Definitions

Step	Language	Word	Meaning
1	Italian	-astro
2	Latin	-astrum	—
3	Latin	-aster	pater + API → patraster

cinerastro — Etymology, Origin & Word History | Etymology Explorer