Where does “Εύξεινος Πόντος” come from?

Εύξεινος Πόντος (Greek) comes from Ancient Greek Εὔξεινος Πόντος, from Ancient Greek Ἄξενος Πόντος — Inhospitable Sea.

Ancestry of “Εύξεινος Πόντος”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Εὔξεινος Πόντος	hospitable sea; Hospitable Sea
2	Ancient Greek	Ἄξενος Πόντος	Inhospitable Sea

Εύξεινος Πόντος — Etymology, Origin & Word History | Etymology Explorer