Where does “Ələddin” come from?

Ələddin (Azerbaijani) comes from Arabic عَلَاء الدِّين — nobility of the faith.

Ancestry of “Ələddin”, step by step

Step	Language	Word	Meaning
1	Arabic	عَلَاء الدِّين	nobility of the faith

Ələddin — Etymology, Origin & Word History | Etymology Explorer