TIERNA(called by Ptol. Δίερνα, 3.8.10), a town of Dacia on the Danube, opposite to the castle of Zernes ( Old Orsova) in Moesia. In inscriptions we find it called Statio Tsiernensis (Murat. p. 332. 3; Griselini, 1. p. 265); in the Digest ( de Cens. 1.8), Colonia Zernensium; and in the Not. Imp. (100.3), Trans Diernis.
[T.H.D]