Amasia, Amasieh, or Amasiyah, a city of Asia Minor, in the pashalic of Sivas, on the Yeshil-Irmak, 50 m. S. S. W. of Samsun on the Black sea; pop. about 25,000. It is situated in a deep valley enclosed by precipitous rocks, upon one of which, on the left bank of the river, are the remains of an ancient acropolis and two Hellenic towers. Four bridges, one probably of Roman construction, cross the river within the limits of the city. The houses are of stone, but mean and small; the bazaars are poor; and the principal buildings are in ruins. There is an active trade in raw silks, wine, madder, grain, and cotton. The early history of the town is unknown. It was the metropolis of Pontus under the Roman domination of Asia Minor. Strabo the geographer was born here, and gives a minute description of the place. The tombs of the kings, of which he speaks, are still to be seen, scooped out of the face of the rock upon which the citadel stands.