Where does “endothermal” come from?

endothermal (English) comes 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.

endothermal (English): endothermic

Definitions

endothermic

Ancestry of “endothermal”, step by step

endothermal traces back through two separate lines of ancestry.

via English thermal

Step	Language	Word	Meaning
1	English	thermal	A column of rising air in the lower atmosphere...
2	French	thermal	thermal
3	New Latin	thermalis	—
4	Ancient Greek	Θέρμη	Therma, Macedonia, Greece
5	Proto-Indo-European	gʷʰer-	warm, hot
6	Proto-Indo-European	gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr	—

via English endo

Step	Language	Word	Meaning
1	English	endo	marijuana; A bike trick where the bike is ridden...
2	Ancient Greek	ἔνδον	in, within
3	Proto-Hellenic	éndon	—
4	Proto-Indo-European	h₁n̥dóm	inside
5	Proto-Indo-European	h₁n̥dó	into, inside
6	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr →Every word from Proto-Indo-European gʷʰer- →Every word from Ancient Greek Θέρμη →