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 kentron, κέντρον (a point ('centre'); a sting (figuratively, poison) or goad (figuratively, divine impulse))

derived from the Greek word kentros