Where does “yderdør” come from?

yderdør (Danish) comes from Danish dør, from Old Norse dýrr, from Proto-Germanic *durz, from Proto-Indo-European dʰwṓr, from Proto-Indo-European dʰwer- — door.

yderdør (Danish): door leading into and out of a building (as opposed to a door leading between rooms inside a building)

Definitions

  1. door leading into and out of a building (as opposed to a door leading between rooms inside a building)

Ancestry of “yderdør”, step by step

StepLanguageWordMeaning
1Danishdørdoor; present of dø
2Old Norsedýrrdear, valuable
3Proto-Germanic*durz—
4Proto-Indo-Europeandʰwṓrdoor
5Proto-Indo-Europeandʰwer-door
Every word from Proto-Indo-European dʰwer- →Every word from Proto-Indo-European dʰwṓr →Every word from Proto-Germanic *durz →