Where does “*Jǫsund” come from?

*Jǫsund (Old Norse) comes from Proto-Germanic jesaną, from Proto-Indo-European yes- — to foam; to boil.

Ancestry of “*Jǫsund”, step by step

StepLanguageWordMeaning
1Proto-Germanicjesanąto ferment
2Proto-Indo-Europeanyes-to foam; to boil
Every word from Proto-Indo-European yes- →Every word from Proto-Germanic jesaną →