ˌwell-esˈtablished BrE AmE adjective
something that is well-established has existed for a long time and is respected or trusted by people:
a well-established law firm
a well-established scientific theory
ˌwell-esˈtablished BrE AmE adjective
something that is well-established has existed for a long time and is respected or trusted by people:
a well-established law firm
a well-established scientific theory
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012