Where does “Araks” come from?

Araks (English) comes from Armenian Արաքս, from Ancient Greek Ἀράξης, from Old Median Araxs(ā).

Ancestry of “Araks”, step by step

Step	Language	Word	Meaning
1	Armenian	Արաքս	—
2	Ancient Greek	Ἀράξης	—
3	Old Median	Araxs(ā)	—

Araks — Etymology, Origin & Word History | Etymology Explorer