Where does “ildfast” come from?

ildfast (Norwegian Bokmål) comes from Norwegian Bokmål ild, from Old Norse eldr, from Proto-Germanic ailidaz, from Proto-Germanic ailijaną, from Proto-Indo-European h₂eydʰ- — to ignite; fire.

ildfast (Norwegian Bokmål): ovenproof, fireproof, fire-resistant

Definitions

  1. ovenproof, fireproof, fire-resistant

Ancestry of “ildfast”, step by step

ildfast traces back through two separate lines of ancestry.

via Norwegian Bokmål ild

StepLanguageWordMeaning
1Norwegian Bokmålildfire
2Old Norseeldrfire
3Proto-Germanicailidazfire, pyre
4Proto-Germanicailijanąto kindle
5Proto-Indo-Europeanh₂eydʰ-to ignite; fire

via Norwegian Bokmål fast

StepLanguageWordMeaning
1Norwegian Bokmålfastsolid, steady, firm, fixed, permanent; imperative...
2Old Norsefastrfast, firm, sticking fast to the spot; close,...
3Proto-Germanicfastuzfixed, firm, secure
Every word from Proto-Indo-European h₂eydʰ- →Every word from Proto-Germanic ailijaną →Every word from Proto-Germanic ailidaz →