Yeşil Irmak yĕshēl´ ərmäk´ [key], anc. Iris, river, c.260 mi (418 km) long, rising NE of Sivas, N Turkey. It flows NW, then NE, past Tokat and Amasya into the Black Sea near Samsun.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
See more Encyclopedia articles on: Turkey Physical Geography