Singidunum
Σιγγί
Singidunum (Σιγγί(ν)δουνον, or Σιγίνδουνον, Ptol. 3.9.3), a town in Moesia Superior, at the spot where the Savus falls into the Danubius, and on the main road along the banks of the latter river, opposite to the town of Taurunum (Semlin) in Pannonia. (Itin. Ant. p. 132; Itin. Hierosol. p. 563.) By Procopius (de Aed. 4.6. p. 287) it is called Σιγγηδών. It was a fortress, and the head-quarters of the Legio IV Flavia Felix (Not. Imp.), the modern Belgrade.
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.