Where does “dyrking” come from?

dyrking (Norwegian Bokmål) comes from Norwegian Bokmål dyrke, from Old Norse dýrka, from Old Norse dýrr, from Proto-Germanic *durz, from Proto-Indo-European dʰwṓr, from Proto-Indo-European dʰwer- — door.

dyrking (Norwegian Bokmål): cultivation

Definitions

  1. cultivation

Ancestry of “dyrking”, step by step

StepLanguageWordMeaning
1Norwegian Bokmåldyrketo engage in; to study; to cultivate, till
2Old Norsedýrka—
3Old Norsedýrrdear, valuable
4Proto-Germanic*durz—
5Proto-Indo-Europeandʰwṓrdoor
6Proto-Indo-Europeandʰwer-door
Every word from Proto-Indo-European dʰwer- →Every word from Proto-Indo-European dʰwṓr →Every word from Proto-Germanic *durz →