Where does “sardiu” come from?

sardiu (Romanian) comes from Latin sardius, from Ancient Greek σάρδιον, from Ancient Greek -ῐον, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

sardiu (Romanian): sard

Definitions

sard

Ancestry of “sardiu”, step by step

Step	Language	Word	Meaning
1	Latin	sardius	sardian, carnelian
2	Ancient Greek	σάρδιον	sardine, carnelian, used also as a seal
3	Ancient Greek	-ῐον	diminutive suffix; "suffix forming...
4	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ῐον →Every word from Ancient Greek σάρδιον →