The Pannonian Basin, or Carpathian Basin, is a large sedimentary basin situated in south-east Central Europe. The geomorphological term Pannonian Plain is more widely used for roughly the same region though with a somewhat different sense, with only the lowlands, the plain that remained when the Pliocene Epoch Pannonian Sea dried out.
Terminology
In English language, the terms "Pannonian Basin" and "Carpathian Basin" are used synonymously. The name "Pannonian" is taken from that of Pannonia, a province of the Roman Empire. The historical province overlapped but was not coterminous with the geographical plain or basin, as only the western part of the territory (known as Transdanubia) of modern Hungary formed part of the ancient Pannonia, while Great Hungarian Plain was not part of it: Pannonia Inferior covered much of the western half of the basin, as far as the Danube. Pannonia Superior included the western fringe of the basin as well as part of the Eastern Alps, as far as Virunum. The southern fringe of the basin was in Dalmatia and Moesia. The eastern half of the basin was not conquered by the Romans and was considered part of Sarmatia, inhabited by the Iazyges. Likewise, the parts north of the Danube (now in western Slovakia) were not in the empire; they were considered part of Germania, inhabited by the Quadi. In terms of modern state boundaries, the Pannonian Basin centres on the territory of Hungary, which lies entirely within the basin, but it also covers parts of southern Slovakia, southeast Poland, southwest Ukraine, western Romania, northern Serbia, northeast Croatia, northeast Slovenia, and eastern Austria.
The term Pannonian Plain refers to the lowland parts of the Pannonian Basin as well as those of some adjoining regions like Lower Austria, Moravia, and Silesia (Czech Republic and Poland). The lands adjoining the plain proper are sometimes also called peri-Pannonian.
The term Carpathian Basin is used in Hungarian literature, while the West Slavic languages (Czech, Polish and Slovak), the Serbo-Croatian, German and Romanian languages use Pannonian; in Hungarian the basin is known as Kárpát-medence, in Czech; Panonská pánev, in Polish; Panoński Basen, in Slovak; Panónska panva, in Slovenian and Serbo-Croatian: Panonski bazen/Панонски базен, in German; Pannonisches Becken, and in Romanian; Câmpia Panonică or Bazinul Panonic. The East Slavic languages, namely Ukrainian, use the terms Tisa-Danube Basin or Middanubian Basin ()
In Hungarian geographical literature various subdivisions of the Carpathian Mountains (Inner Western Carpathians, Inner Eastern Carpathians, Southern Carpathians, Western Carpathians and Transylvanian Plateau) are also considered parts of the Carpathian Basin on the basis of the pre-WW1 era old traditional geopolitical divisions.
For example: On the territory of present-day Hungary the ancient Roman Pannonia province was located only on Transdanubian territories, however the Great Hungarian Plain was not part of Pannonia province. This comprises less than 29% of modern Hungary, therefore Hungarian geographers avoid the terms "Pannonian Basin" and especially the "Pannonian Plain" terms due to it being considered not only unhistorical but also topologically erroneous term. Because the term "Pannonian" has historically not applied to 80% of the basin's territory, Hungarian geographers and historians use the more accurate term "Carpathian Basin". The other logical problem with the Pannonian terminology lies in topography: with the exception of Little Hungarian Plain (which is only around 15% of the territory of ancient Pannonian Transdanubia) hills and mountains dominate the landscape, so real plains are very rare on that territory. The largest plain of Ancient Roman Pannonia province is located in Slavonia in Croatia and Voivodine in modern Serbia.
Etymology
Julius Pokorny derived the name Pannonia from Illyrian, from the Proto-Indo-European root *pen-, "swamp, water, wet" (cf. English fen, "marsh"; Hindi pani, "water").
The name "Carpates" is highly associated with the old Dacian tribes called "Carpes" or "Carpi" who lived in a large area from the east, northeast of the Black Sea to the Transylvanian Plain in present day Romania and Moldova. The name Carpates may ultimately be from the Proto Indo-European root *sker-/*ker-, which meant mountain, rock, or rugged (cf. Germanic root *skerp-, Old Norse "harrow", Gothic skarpo, Middle Low German scharf "potsherd", and Modern High German Scherbe "shard", Old English and English sharp, Lithuanian kar~pas "cut, hack, notch", Latvian cìrpt "to shear, clip").