Hollandic
Hollandic is a historical term used in linguistics to denote the group of Dutch dialects spoken in the County of Holland and, later, the province of Holland in the Netherlands. It refers to the Early New Dutch and Middle Dutch varieties associated with that region and is recognized as one of the major regional branches of the Dutch language during the medieval and early modern periods.
Geographically, Hollandic varieties were concentrated in what is now North and South Holland, including urban centers
Linguistically, Hollandic contributed to the emergence of standard Dutch, even as it remained primarily a vernacular
Today, references to Hollandic appear in studies of Dutch dialectology and historical linguistics, where it is