Where does “إِسْفَنْج” come from?

إِسْفَنْج (Arabic) comes from Ancient Greek σπόγγος — sponge; tonsil.

Ancestry of “إِسْفَنْج”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	σπόγγος	sponge; tonsil

إِسْفَنْج — Etymology, Origin & Word History | Etymology Explorer