The ancient Greek language includes the forms of Greek used in Ancient Greece and the ancient world from around the 9th century BC to the 6th century AD. It is often roughly divided into the Archaic period (9th to 6th centuries BC), Classical period (5th and 4th centuries BC), and Hellenistic period (Koine Greek, 3rd century BC to the 4th century AD). It is antedated in the second millennium BC by Mycenaean Greek and succeeded by Medieval Greek.