Athrys-Athyras-3-rivers-1-meaning

 

There are 3 rivers (1 Scythian and 2 Thracian) 

by Paulys RE 

Paulys Realencyclopädie der classischen Altertumswissenschaft 

having similar names: 

Athrys

Athyras 1

Athyras 2

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In Turkish there is a verbal root called: 

adır-

It means to separate, to differentiate, to recognize, to deprive of something.

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Possible root of those rivers?

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Now the related pics:

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And now the Turkish root:

Eski Türkçe Sözlük - Aliyeva Çınar / Bayat

Uzunbacak Adem