Where does “grzejnik” come from?
grzejnik (Polish) comes from Polish grzać, from Proto-Slavic grěti, from Proto-Indo-European gʷʰer-, from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr.
grzejnik (Polish): heater, heating radiator
Ancestry of “grzejnik”, step by step