Where does “საბერძნეთი” come from?

საბერძნეთი (Georgian) comes from Georgian ბერძენი, from Ancient Greek Βυζάντιον, from Ancient Greek -ῐον, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “საბერძნეთი”, step by step

საბერძნეთი traces back through two separate lines of ancestry.

via Georgian ბერძენი

Step	Language	Word	Meaning
1	Georgian	ბერძენი	Greek person
2	Ancient Greek	Βυζάντιον	—
3	Ancient Greek	-ῐον	diminutive suffix; "suffix forming...
4	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

via Georgian სა- -ეთი

Step	Language	Word	Meaning
1	Georgian	სა- -ეთი	—

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