Herdōnea or -ia, ae, f., a city of the interior of Apulia, now Ordona, Liv. 25, 21, 1; 27, 1, 3; Sil. 8, 569 (perh. also in Liv. 24, 20, 8, inst. of Ardoneas). Herdōni-enses, ĭum, m., the inhabitants of Herdonia, Plin. 3, 11, 16, § 105.