Where does “Av” come from?

Av comes from Hebrew אָב, derived from Akkadian 𒉈, which traces to Proto-Semitic ʾiš-.

Av (English): The eleventh month of the civil year and the fifth month of the ecclesiastical year in the Jewish calendar, after Tammuz and before Elul

Definitions

The eleventh month of the civil year and the fifth month of the ecclesiastical year in the Jewish calendar, after Tammuz and before Elul

Ancestry of “Av”, step by step

Step	Language	Word	Meaning
1	Hebrew	אָב	chief; father; father; ancestor, forefather
2	Akkadian	𒉈	Ab, fifth month of the year; fire
3	Sumerian	𒉈	to bring, carry; to burn; fire

Every word from Sumerian 𒉈 →Every word from Akkadian 𒉈 →Every word from Hebrew אָב →