The word "Nile" ('nIl) comes from the word Neilos (Νειλος), a Greek name for the Nile. Another Greek name for the Nile was Aigyptos (Αιγυπτος), which itself is the source of the name "Egypt."
There are two great branches of the Nile: the White Nile, from equatorial East Africa, and the Blue Nile, from Ethiopia. Both branches formed on the western flanks of the East African Rift, which is the southern African part of the Great Rift Valley.
Lake Victoria, which lies between Uganda, Kenya and Tanzania, is considered to be the source of the Nile, although the lake itself has feeder rivers of considerable size from the other Great Lakes of Africa. In particular, the farthest headstream of the Nile is the Ruvyironza River in Burundi, which is an upper branch of the Kagera River. The Kagera flows for 690 km (429 miles) before reaching Lake Victoria.