Editing Guadiana (section)

==Etymology==
[[File:SpainGuadianaBasin.png|thumb|left|The Guadiana drainage basin in the Iberian peninsula]]
[[Geography (Ptolemy)|Ptolemy's ''Geography'']] recorded the [[Celtiberians|Celtiberian]] name as ''Anas'', meaning a marshy area or [[bayou]]. The Romans adapted this name as {{lang|la|Flumen [[Anas#Latin|Anās]]}}, which was [[folk etymology|etymolygised as]] the "River of Ducks." After the [[Muslim conquest of the Iberian Peninsula]], the name was extended and referred to as ''[[Wadi]] Ana'', later passed on to Portuguese and Spanish settlers as the ''Ouadiana'', and later just ''Odiana''. Since the 16th century, the name slowly evolved to take on the form ''Guadiana'', a cognitive variation that developed from many Andalusi river place-names beginning in ''wadi'' using the prefix ''guad-'' such as the hydronyms [[Guadalquivir]], [[Guadalete]], and [[Guadarrama River|Guadarrama]].