Editing Isère (river) (section)

== Etymology ==
The name ''Isère'' was first recorded under the form ''Isara'', which means "the impetuous one, the swift one."<ref>{{cite web |url=http://www.arbre-celtique.com/forum/isar-3997.htm |title=ISARA / ISAROS (ISÈRE) |date=2009 |website=Encyclopédie de l'Arbre Celtique |publisher= Guillaume Roussel|language=fr |access-date=24 March 2015}}</ref> Not originally a [[Celtic languages|Celtic]] word, it was very likely assimilated by the [[Celts]] in ancient times. This word is related to the [[Proto-Indo-European language|Indo-European]] ''*isərós'', meaning "impetuous, quick, vigorous," which is similar to the [[Sanskrit]] ''isiráḥ'' इसिरः อิสิระ with the same definition.<ref name=Delamarre>{{cite book |last=Delamarre |first=Xavier |date=2003 |title=Dictionnaire de la langue gauloise : une approche linguistique du vieux-celtique continental |trans-title= Dictionary of the Gallic Language: A Linguistic Approach to Continental Old Celtic |language=fr |publisher=Errance |location=Paris |edition=Revised and augmented 2nd |series=Collection des Hespérides |isbn=978-2-87772-369-5 |oclc=354152038 |page=191}}</ref> It was probably based on the reconstructed Indo-European root ''*eis(ə)'' (and not ''*is''), which incidentally has not been found in the [[Insular Celtic languages|Celtic languages of the British Isles]].<ref name=Delamarre />

The word ''Isara'' figures in the etymology of many other river names, from ancient [[Gaul]] and its neighboring lands. Examples of this are the [[Ésera]] in [[Spain]], the [[Isar]] in [[Germany]], the small Franco-Belgian [[Yser]], or even the ancient name of the [[Oise (river)|Oise]], ''Isara'' (the [[French language|French]] adjective ''isarien'' still exists in the language and continues to describe anything related to the Oise). In non-Celtic countries, we find the ''Isarco'', a river in Northern Italy, the ''Éisra'' and ''Istrà'' in [[Lithuania]],<ref name=Delamarre /> ''[[Jizera (river)|Jizera]]'' in the [[Czech Republic]] and ''[[Usora (river)|Usora]]'' in [[Bosnia and Herzegovina]].