Where does “عراق” come from?

عراق (Persian) comes from Arabic عِراق, from Arabic الْعِرَاق — Iraq.

Ancestry of “عراق”, step by step

Step	Language	Word	Meaning
1	Arabic	عِراق	—
2	Arabic	الْعِرَاق	Iraq

عراق — Etymology, Origin & Word History | Etymology Explorer