Definition of "Seleucia"

(historical) A former city in Mesopotamia, the capital city of the Seleucid Empire.

(historical) Various other former cities in Southwestern Asia founded by the Seleucids, including:

1. A former city in Syria, the Mediterranean seaport of ancient Antioch on the Orontes.  examples

2. A former city in Sittacene near Seleucia-on-Tigris.  examples

3. Synonym of Gadara, a former city in northwestern Jordan near present-day Umm Qais.  examples

4. Former name of Aydin, a city in southwestern Turkey.  examples

5. Former name of Silifke, a city in southern Turkey.  examples