Seleucia-on-Tigris

== English == === Etymology === From Latin Seleucia ad Tigrim, from its position on the Tigris River, used to distinguish it from other Seleucias. === Proper noun === Seleucia-on-Tigris (historical) The capital of the Seleucid Empire, and a major city in Parthian and Sasanian periods ==== Synonyms ==== Seleucia on the Tigris Seleucia