1. 
   Rhetian
   Rhe'ti·an adjective [ Latin Rhaetius , Raetius : confer French rhétien .] Pertaining to the ancient Rhæti, or Rhætians, or to Rhætia, their country; as, the Rhetian Alps, now the country of Tyrol and the Grisons.
   Found op http://www.encyclo.co.uk/webster/R/75
   
   
2. 
   Rhetian
   • (a.) Pertaining to the ancient Rhaeti, or Rhaetians, or to Rhaetia, their country; as, the Rhetian Alps, now the country of Tyrol and the Grisons.
   Found op http://thinkexist.com/dictionary/meaning/rhetian/
   
   

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