langue d'oc[läng dō̂k′]
a group of French dialects spoken in medieval S France and surviving in Provençal
Origin of langue d'ocFrench literally , language of oc (; from ProvenÃ§al yes ; from Classical Latin hoc, this thing): from characteristic use of oc for affirmation (in contrast to langue d'oïl)
Occitan, especially as spoken and written in medieval times.
Origin of langue d'ocFrench, from Old French : langue, language; see language + de, of (from Latin dē; see de–) + Old Provençal oc, yes; see Occitan.