Where does “electrothermally” come from?
electrothermally (English) comes from English electrothermal, from English thermal, from French thermal, from New Latin thermalis, from Ancient Greek Θέρμη, from Proto-Indo-European gʷʰer-, from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr.
electrothermally (English): by electrothermal means
Ancestry of “electrothermally”, step by step