Where does “jämnvarm” come from?

jämnvarm (Swedish) comes from Swedish varm, from Old Swedish varmber, from Old Norse varmr, from Proto-Germanic warmaz, from Proto-Indo-European gʷʰer-, from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr.

jämnvarm (Swedish): endothermic

Definitions

endothermic

Ancestry of “jämnvarm”, step by step

jämnvarm traces back through two separate lines of ancestry.

via Swedish varm

Step	Language	Word	Meaning
1	Swedish	varm	warm, hot; of high temperature; warm, caring
2	Old Swedish	varmber	warm
3	Old Norse	varmr	warm
4	Proto-Germanic	warmaz	warm
5	Proto-Indo-European	gʷʰer-	warm, hot
6	Proto-Indo-European	gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr	—

via Swedish jämn

Step	Language	Word	Meaning
1	Swedish	jämn	even; divisible by 2; even; a function of one...
2	Old Swedish	iæmpn	even
3	Old Norse	jafn	even; equal, the same
4	Proto-Germanic	ebnaz	even, level
5	Proto-Indo-European	h₁émnos	equal, straight; flat, level, even

Every word from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr →Every word from Proto-Indo-European gʷʰer- →Every word from Proto-Germanic warmaz →