[1896] Prolog, prolŏgus (πρόλογος).
Brockhaus-1809: Der Prolog (Prologus)
Brockhaus-1911: Prolog
DamenConvLex-1834: Prolog
Herder-1854: Prolog
Meyers-1905: Prolōg
Pierer-1857: Prolog