ancient country in NW Asia Minor, in what is now Turkey: fl. 3d cent. –1st cent.
An ancient country of northwest Asia Minor in present-day Turkey. Originally inhabited by Thracians, it was absorbed into the Roman Empire by the end of the first century BC.
- An ancient region, kingdom and Roman province in the northwest of Asia Minor
From Latin Bithynia, from Ancient Greek Βιθυνία (Bithunia).