Etymology of the Latin word episcopus
the Latin word episcopus (bishop; patriarch)
derived from the Greek word episkopos, ἐπίσκοπος (a superintendent; Christian officer in genitive case charge of a (or the) church)
using the Greek prefix epi-, ἐπι-
derived from the Byzantine Greek word epi, ἐπί (upon; properly, meaning superimposition (of time, place, order, etc.), as a relation of distribution (with the genitive case); over, upon, etc.; of rest (with the dative case) at, on, etc.; of direction (with the accusative case) towards, upon, etc.)
derived from the Greek word skopos, σκοπός (a watch (sentry or scout); a goal)
derived from the Proto-Indo-European root *spek-
derived from the Greek word episkepesthai
derived from the Byzantine Greek word epi, ἐπί (upon; properly, meaning superimposition (of time, place, order, etc.), as a relation of distribution (with the genitive case); over, upon, etc.; of rest (with the dative case) at, on, etc.; of direction (with the accusative case) towards, upon, etc.)
derived from the Greek word skepesthai