Where does “cambium” come from?

cambium (Vulgar Latin) comes from Latin cambiāre, from Latin cambiō, from Latin cambium, from Gaulish cambion, from Proto-Celtic kambos, from Proto-Indo-European kamp- — to bend; crooked; crooked.

Ancestry of “cambium”, step by step

StepLanguageWordMeaning
1Latincambiāre—
2Latincambiōto exchange, barter; change
3LatincambiumA change; cambium
4Gaulishcambionchange
5Proto-Celtickamboscurved; twisted, crooked
6Proto-Indo-Europeankamp-to bend; crooked; crooked
Every word from Proto-Indo-European kamp- →Every word from Proto-Celtic kambos →Every word from Gaulish cambion →