Proper noun
Graeco-Armenian
(Indo-European studies) a proposed branch within the Indo-European language family, of which the Hellenic and Armenian branches are sub-branches.
Eric P. Hamp (1976, 91) supports the Graeco-Armenian thesis, anticipating even a time "when we should speak of Helleno-Armenian" (meaning the postulate of a Graeco-Armenian proto-language). Source: Internet