Francien is a nineteenth-century linguist term applied to the particular langue d'oïl that was spoken in the Île-de-France region (with  Paris at its centre) before the establishment of the French language as a standard language.

Francien is a nineteenth-century linguist term applied to the particular langue d'oïl that was spoken in the Île-de-France region (with  Paris at its centre) before the establishment of the French language as a standard language.