Issus or -os, i, f., = Ἰσσός,
I a city of Cilicia , on the Mediterranean ( the Gulf of Issus , now Gulf of Iskenderun ), at the foot of Mount Amanus , where Darius was defeated by Alexander , Mel. 1, 13, 1; Plin. 5, 27, 22, § 91; Cic. Fam. 2, 10, 3; Curt. 3, 8, 8. —
II Deriv. Issĭcus , a, um, adj., of or belonging to Issus : sinus, the Gulf of Issus , Mel. 1, 13, 1; Plin. 2, 108, 112, § 243.