Armenian language
Greco-Armeno-Aryan hypothesis

Graeco-(Armeno)-Aryan is a hypothetical clade within the Indo-European family, ancestral to the Greek language, the Armenian language, and the Indo-Iranian languages. Graeco-Aryan unity would have become divided into Proto-Greek and Proto-Indo-Iranian by the mid-3rd millennium BC. Conceivably, Proto-Armenian would have been located between Proto-Greek and Proto-Indo-Iranian, consistent with the fact that Armenian shares certain features only with Indo-Iranian (the satem change) but others only with Greek (s > h).

Graeco-Aryan has comparatively wide support among Indo-Europeanists who believe the Indo-European homeland to be located in the Armenian Highlands, the " Armenian hypothesis ". Early and strong evidence was given by Euler's 1979 examination on shared features in Greek and Sanskrit nominal flection.

Used in tandem with the Graeco-Armenian hypothesis, the Armenian language would also be included under the label Aryano-Greco-Armenic, splitting into Proto-Greek/Phrygian and "Armeno-Aryan" (ancestor of Armenian and Indo-Iranian).
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