Where does “Oppeln” come from?

Oppeln (German) comes from Middle High German [[Opeln]], [[Oppulen]], [[Oppol]], from Old Polish Opole, from French -pole, from Ancient Greek πόλις, from Proto-Hellenic ptólis, from Proto-Indo-European tpólHis, from Proto-Indo-European tpelH- — fortification, city.

Ancestry of “Oppeln”, step by step

StepLanguageWordMeaning
1Middle High German[[Opeln]], [[Oppulen]], [[Oppol]]
2Old PolishOpoleprovince; duty
3French-pole-polis; -poly, related to market or economy
4Ancient Greekπόλιςcity; a whole country, as dependent on and called...
5Proto-Hellenicptóliscity
6Proto-Indo-EuropeantpólHis
7Proto-Indo-EuropeantpelH-fortification, city
Every word from Proto-Indo-European tpelH-Every word from Proto-Indo-European tpólHisEvery word from Proto-Hellenic ptólis