2 occurrences in 2 dictionaries
Reference: Telassar
Easton
or Thelasar, (Isa 37:12; 2Ki 19:12), a province in the south-east of Assyria, probably in Babylonia. Some have identified it with Tel Afer, a place in Mesopotamia, some 30 miles from Sinjar.
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Morish
Telas'sar Thelasar. Thel'asar
City wherein dwelt 'the children of Eden,' who had been conquered by the Assyrians. By the names mentioned with it, Thelasar was probably in Mesopotamia, but is not identified. 2Ki 19:12; Isa 37:12.