Where does “تخت‌روانچی” come from?

تخت‌روانچی (Persian) comes from Persian تخت روان, from Persian روان, from French Rouen, from Old French Roem, from Latin Rotomagus, from Gaulish Ratumacos, from Gaulish magos, from Proto-Celtic magos — big, great; great; big, stour, great.

Ancestry of “تخت‌روانچی”, step by step

تخت‌روانچی traces back through two separate lines of ancestry.

via Persian تخت روان

StepLanguageWordMeaning
1Persianتخت روان
2Persianروانfluid; flowing; fluent
3FrenchRouen
4Old FrenchRoem
5LatinRotomagusThe chief city of the Veliocasses in Gallia Lugdunensis, now Rouen
6GaulishRatumacos
7Gaulishmagosfield
8Proto-Celticmagosplain, field
9Proto-Indo-Europeanmeǵh₂-big, great; great; big, stour, great

via Persian ـچی

StepLanguageWordMeaning
1Persianـچیer; -eer
2Proto-Turkic-čiProfession suffix
Every word from Proto-Indo-European meǵh₂-Every word from Proto-Celtic magosEvery word from Gaulish magos