Of or designating the inhabitants of ancient Rhaetia and Etruria, or their pre-Indo-European language or languages. Compare "Rhaetian", "Etruscan".
A hypothetical pre-Indo-European language, or cluster of pre-Indo-European cognate languages, including Rhaetic and Etruscan. Compare Rhaetic , "Etruscan".
Mid 19th century. From classical Latin Rhaetus Rhaetian + -o- + Etruscan [noun].