Where does “byzantská gréčtina” come from?

byzantská gréčtina (Slovak) comes from Slovak gréčtina, from Slovak grécky, from Slovak Grék, from Latin Graecus, from Ancient Greek Γραικός, from Ancient Greek γραῖα, from Proto-Indo-European ǵerh₂- — to grow old, to mature.

byzantská gréčtina (Slovak): Byzantine Greek

Definitions

Byzantine Greek

Ancestry of “byzantská gréčtina”, step by step

byzantská gréčtina traces back through two separate lines of ancestry.

via Slovak gréčtina

Step	Language	Word	Meaning
1	Slovak	gréčtina	Greek language
2	Slovak	grécky	Greek
3	Slovak	Grék	Greek
4	Latin	Graecus	Greek, Grecian, of or pertaining to the Greek...
5	Ancient Greek	Γραικός	Greek; a Graecian, a member of an ancient...
6	Ancient Greek	γραῖα	Graea, Boeotia; Greece
7	Proto-Indo-European	ǵerh₂-	to grow old, to mature

via Slovak byzantský

Step	Language	Word	Meaning
1	Slovak	byzantský	—

Every word from Proto-Indo-European ǵerh₂- →Every word from Ancient Greek γραῖα →Every word from Ancient Greek Γραικός →