Telassar
or Thelasar, (Isa. 37:12; 2 Kings 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.
Bibliography Information Easton, Matthew George. M.A., D.D., "Definition for 'Telassar' Eastons Bible Dictionary". bible-history.com - Eastons; 1897.