Where does “eldfast” come from?

eldfast (Swedish) comes from Swedish eld, from Old Swedish elder, from Old Norse eldr, from Proto-Germanic ailidaz, from Proto-Germanic ailijaną, from Proto-Indo-European h₂eydʰ- — to ignite; fire.

eldfast (Swedish): fireproof

Definitions

  1. fireproof

Ancestry of “eldfast”, step by step

eldfast traces back through two separate lines of ancestry.

via Swedish eld

StepLanguageWordMeaning
1Swedisheldfire, a continued chemical exothermic reaction...
2Old Swedishelderfire; a skin disease - possibly erysipelas
3Old Norseeldrfire
4Proto-Germanicailidazfire, pyre
5Proto-Germanicailijanąto kindle
6Proto-Indo-Europeanh₂eydʰ-to ignite; fire

via Swedish fäst

StepLanguageWordMeaning
1Swedishfästfast
2Old Swedishfasterfast, firm
3Old Norsefastrfast, firm, sticking fast to the spot; close,...
4Proto-Germanicfastuzfixed, firm, secure

Words derived from “eldfast”

Every word from Proto-Indo-European h₂eydʰ- →