Where does “islanninjäkälä” come from?

islanninjäkälä (Finnish) comes from Finnish Islanti, from Old Norse Ísland, from Old Norse íss, from Proto-Germanic īsą, from Proto-Indo-European h₁eyH- — ice, frost.

Ancestry of “islanninjäkälä”, step by step

islanninjäkälä traces back through two separate lines of ancestry.

via Finnish Islanti

StepLanguageWordMeaning
1FinnishIslantiIceland
2Old NorseÍslandIceland
3Old Norseíssice
4Proto-Germanicīsąice
5Proto-Indo-Europeanh₁eyH-ice, frost

via Finnish jäkälä

StepLanguageWordMeaning
1Finnishjäkälälichen
2Proto-Finnicjäkälälichen
3Proto-Finno-Permicjäkä-—
Every word from Proto-Indo-European h₁eyH- →Every word from Proto-Germanic īsą →Every word from Old Norse íss →