Where does “syrstilk” come from?

syrstilk (Norwegian Nynorsk) comes from Norwegian Nynorsk syre, from Old Norse sýra, from Proto-Germanic sūrą.

Ancestry of “syrstilk”, step by step

syrstilk traces back through two separate lines of ancestry.

via Norwegian Nynorsk syre

StepLanguageWordMeaning
1Norwegian Nynorsksyrean acid; sour whey; to make more sour or acidic
2Old Norsesýrasour milk
3Proto-Germanicsūrą—

via Norwegian Nynorsk stilk

StepLanguageWordMeaning
1Norwegian Nynorskstilka stalk or stem
2Old Norsestilkr—
Every word from Proto-Germanic sūrą →Every word from Old Norse sýra →Every word from Norwegian Nynorsk syre →