The Amu Darya (Persian: آمودریا‎‎, Āmūdaryā; Turkmen: Amyderýa; Turkish: Ceyhun; Uzbek: Amudaryo; Tajik: Амударё; Pashto: د آمو سيند‎, da Āmú Sínd; Ancient Greek: Ὦξος, Oxos; Latin: "Oxus"; Sanskrit: वक्षु, Vakṣu), also called Amu River, is a major river in Central Asia. It is formed by the junction of the Vakhsh and Panj rivers and flows into the Aral Sea. In ancient times, the river was regarded as the boundary between Greater Iran and Turan.