Italian filtro

← French filtre (borrowed)

← Proto-West Germanic *felt (derived)

← Ancient Greek φίλτρον (derived)

← Ancient Greek φιλέω (mention)

← Proto-Indo-European *peld- (derived)

← Proto-Indo-European *pelh₂- (mention)

← Italian feltro (link)

← Latin philtrum (borrowed)

→ Greek φίλτρο (mention)

→ Italian filtrare (affix)

→ Italian ultrafiltro (prefix)

→ Italian elettrofiltro (prefix)

→ Italian microfiltro (prefix)