AQUITANIA, in Ancient Geography, one of the three principal divisions of Gallia Comata (Cæsar); bounded by the Garonne, the Pyrenees, and the ocean: this is the Aquitania Cæsariana, or Vetus. Augustus set the different boundaries, viz. the Loire, the Cévennes, the Pyrenees, and the ocean (Strabo). It was called Gallia Aquitanica (Pliny); and in the old Notitise, Provincia Aquitanica. The people are called Aquitani (Cæsar). Now comprising Guienne (which seems to be a corruption of Aquitania) and Gascogne.