Italian word polizza comes from Ancient Greek ἀποδείκνυμι

Detailed word origin of polizza

Dictionary entry	Language	Definition
ἀποδείκνυμι	Ancient Greek (grc)
ἀπόδειξις	Ancient Greek (grc)
apodissa	Malayalam (mal)
apodixa	Latin (lat)
polizza	Italian (ita)	Bill, voucher. Policy (insurance).