\Rhe"ti*an\, a. [L. Rhaetius, Raetius: cf. F.
rh['e]tien.]
Pertaining to the ancient Rh[ae]ti, or Rh[ae]tians, or to
Rh[ae]tia, their country; as, the Rhetian Alps, now the
country of Tyrol and the Grisons.