Trøndersk is the dialect spoken in the region Trøndelag in Norway and traditionally in Jämtland (especially the northwestern parts) and Härjedalen (sometimes referred to as Øst-Trøndelag by the locals) in Sweden as well.
Trøndersk is the Norwegian dialect spoken in the region Trøndelag in Norway. Historically it also applied to contiguous regions of Jämtland (especially the northwestern parts), Härjedalen and Älvdalen (referred to as "Øst-Trøndelag" by some locals) in Sweden as well.