Its name indicates that it was part of a territory known as "'the fertile valley": a document of 1304 referring to the Habiate qui dicitur Grasso, a title which gradually became transformed into Abbiategrasso.
Navnet indikerer at det var en del af territoriet kendt som den frugtbar dal: et dokument fra 1304 refererer til Habiate qui dicitur Grasso, en titel der langsomt blev ændre til Abbiategrasso.