Occitan
noun
Oc·ci·tan ˈäk-sə-ˌtan 
: a Romance language spoken in southern France
Occitan adjective
Word History
Etymology
French, from Medieval Latin occitanus, from Old Occitan oc yes (contrasted with Old French oïl yes) + Medieval Latin -itanus (perhaps as in aquitanus of Aquitaine)
First Known Use
1958, in the meaning defined above