Late 18th century (in an earlier sense). From Norwegian (Nynorsk) saeter, (Nynorsk and Bokmål) seter (Old Norwegian saetr) and its cognate Swedish säter from an es-, os-stem derivative of an ablaut variant (lengthened grade) of the same Indo-European base as sit; compare (with e-grade) Sanskrit sadas abode, dwelling place, ancient Greek ἕδος seat, stool, abode, dwelling place, Old Icelandic setr abode, dwelling place, setting (of the sun).