Amasia, a mah'se ah, a town in the north of Asia Minor, on the Irmak, 60 mi. from the Black Sea, surmounted by a rocky height in which is a ruined fortress. It has numerous mosques, richly-endowed Mohammedan schools and a number of archaic remains. The trade in silk, fruits and wines is considerable. Amasia was a residence of the ancient kings of Pontus. Population, about 30,000.