I.a town in Bithynia, on the Thracian Bosporus, opposite Byzantium, Mel. 1, 19, 5; Plin. 5, 32, 43, § 149 sq.; 37, 5, 18, § 73; Liv. 42, 56, 6; acc. Gr. Chalcedona, Luc. 9, 959 al.; cf. Mann. Asia Min. 3, p. 581 sq.—Hence,
II. Chalcēdŏnĭus , a, um, adj., of Chalcedon, Chalcedonian: “Thrasymachus,” Cic. de Or. 3, 32, 128: “smaragdi,” Plin. 37, 5, 18, § 72: “harenae,” Claud. in Rufin. 2, 55.—Subst.: Chalcēdŏnii , ōrum, m., the Chalcedonians, Tac. A. 12, 63.