a port city in western Greece in the northwestern Peloponnese on an inlet of the Ionian Sea; was a major trade center from the 5th century BC to the 3rd century BC; commercial importance revived during the Middle Ages

Patras (Demotic Greek: Πάτρα, Classical Greek: Πάτραι Pátrai, , Ottoman Turkish: Ballıbadra) is the third-largest city of Greece and the capital of the prefecture of Achaea, located in northern Peloponnese, 215 kilometers to the west of Athens. The city is built at the foothills of Mount Panachaikon, overlooking the Gulf of Patras.