Where does “tan” come from?

tan (Middle French) comes from Old French tan, from Latin tannum, from Gaulish tannos, from Proto-Celtic tannos, from Proto-Indo-European dʰonu — fir.

Ancestry of “tan”, step by step

StepLanguageWordMeaning
1Old Frenchtanpulped oak bark used in the tanning process
2Latintannumoak bark
3Gaulishtannos—
4Proto-Celtictannosgreen oak
5Proto-Indo-Europeandʰonufir

Words derived from “tan”

Every word from Proto-Indo-European dʰonu →Every word from Proto-Celtic tannos →Every word from Gaulish tannos →