Where does “Palermo” come from?

Palermo (Italian) comes from Sicilian Palermu, from Arabic بَلَرْم, from Latin Panormus, from Ancient Greek Πάνορμος, from Ancient Greek πᾰν-, from Ancient Greek πᾶς, from Proto-Hellenic *pánts.

Palermo (Italian): the letter P in the [[Appendix:Italian spelling alphabet