Where does “Dag” come from?

Dag (Norwegian) comes from Old Norse dagr, from Proto-Germanic dagaz, from Proto-Indo-European dʰegʷʰ- — to burn; warm, hot.

Ancestry of “Dag”, step by step

StepLanguageWordMeaning
1Old Norsedagra day; days, times
2Proto-Germanicdagazday; name of the D-rune
3Proto-Indo-Europeandʰegʷʰ-to burn; warm, hot
Every word from Proto-Indo-European dʰegʷʰ- →Every word from Proto-Germanic dagaz →Every word from Old Norse dagr →
Dag — Etymology, Origin & Word History | Etymology Explorer