Where does “اراک” come from?

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

Ancestry of “اراک”, step by step

Step	Language	Word	Meaning
1	Persian	عراق	—
2	Arabic	عِراق	—
3	Arabic	الْعِرَاق	Iraq

اراک — Etymology, Origin & Word History | Etymology Explorer