Euphrates
geographical name
Eu·phra·tes yu̇-ˈfrā-(ˌ)tēz 
river 1700 miles (2736 kilometers) long in southwestern Asia flowing from eastern Turkey southeast through Syria and Iraq to unite with the Tigris forming the Shatt al Arab see kara su
Note: The valley of the Euphrates was extensively irrigated in ancient times.
Euphratean
yu̇-ˈfrā-tē-ən
adjective