Where does “heilsa” come from?

heilsa (Old Norse) comes from Proto-Germanic hailisōną, from Proto-Germanic hailaz, from Proto-Indo-European *kéh₂ilos.

heilsa (Old Norse): health

Definitions

Step	Language	Word	Meaning
1	Proto-Germanic	hailisōną	to greet; salute; to inquire; beseech
2	Proto-Germanic	hailaz	whole, unbroken, intact; entire, complete; hale,...
3	Proto-Indo-European	*kéh₂ilos	—

heilsa — Etymology, Origin & Word History | Etymology Explorer