Reference: Ellasar
American
Easton
the oak or heap of Assyria, a territory in Asia of which Arioch was king (Ge 14:1,9). It is supposed that the old Chaldean town of Larsa was the metropolis of this kingdom, situated nearly half-way between Ur (now Mugheir) and Erech, on the left bank of the Euphrates. This town is represented by the mounds of Senkereh, a little to the east of Erech.
Fausets
The invader Arioch's kingdom (Ge 14:1). The Chaldeaan Larsa, Greek Larissa, a town of lower Babylon, half way between Ur (Mugheir) and Erech (Warka) on the left bank of the Euphrates. Now Senkereh. The inscriptions prove it a primitive capital, probably older than Babylon.
Hastings
Arioch king of Ellasar was allied with Chedorlaomer in the campaign against the kings of the plain (Ge 14:1). He has been identified with Rim-sin, king of Larsa, and consequently 'Ellasar' is thought to be for al-Larsa, 'the city of Larsa.' Larsa, modern Senkereh in Lower Babylonia on the east bank of the Euphrates, was celebrated for its temple and worship of the sun-god Shamash.
C. H. W. Johns.
Morish
Smith
El'lasar
(oak), the city of Arioch,
seems to be the Hebrew representative of the old Chaldean town called in the native dialect Larsa or Larancha. Larsa was a town of lower Babylonia or Chaldea, situated nearly halfway between Ur (Mugheir) and Erech (Warka), on the left bank of the Euphrates. It is now Senkereh.