Where does “iætun” come from?

iætun (Old Swedish) comes from Old Norse jǫtunn, from Proto-Germanic etunaz, from Proto-Germanic etaną, from Proto-Indo-European h₁édti, from Proto-Indo-European h₁ed- — to eat.

Ancestry of “iætun”, step by step

StepLanguageWordMeaning
1Old Norsejǫtunna jotun, giant
2Proto-Germanicetunazan overeater, glutton; a giant
3Proto-Germanicetanąto eat
4Proto-Indo-Europeanh₁édtito eat
5Proto-Indo-Europeanh₁ed-to eat
Every word from Proto-Indo-European h₁ed- →Every word from Proto-Indo-European h₁édti →Every word from Proto-Germanic etaną →