κοσμοκράτωρ G2888
kosmokrátōr · kos-mok-fat'-ore · Noun Masculine
from κόσμος and κρατέω; a world-ruler, an epithet of Satan:--ruler.
1 Occurrence in the King James Bible
Ephesians 6:12For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.