Where does “سورن” come from?

سورن (Persian) comes from Middle Persian 𐭮𐭥𐭫𐭩𐭭, from Parthian 𐭎𐭅𐭓𐭉𐭍.

Ancestry of “سورن”, step by step

Step	Language	Word	Meaning
1	Middle Persian	𐭮𐭥𐭫𐭩𐭭	—
2	Parthian	𐭎𐭅𐭓𐭉𐭍	—