Where does “Uxellodunum” come from?

Uxellodunum (Galatian) comes from Proto-Celtic dūnom, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

Ancestry of “Uxellodunum”, step by step

Uxellodunum traces back through two separate lines of ancestry.

via Proto-Celtic dūnom

StepLanguageWordMeaning
1Proto-Celticdūnomstronghold, rampart
2Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via Proto-Celtic ouxselos

StepLanguageWordMeaning
1Proto-Celticouxseloshigh, elevated
2Proto-Indo-Europeanh₃ewps-—
Every word from Proto-Indo-European dʰewh₂- →Every word from Proto-Celtic dūnom →