Lewis & Short

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Săguntum, i, n., and Săguntus (-os), i, f., = Σάγουντον, a town in Hispania Tarraconensis, on the Mediterranean, beyond the Iberus, the besieging and reduction of which by Hannibal led to the breaking out of the second Punic war; now Murviedro.
Neutr., Liv. 21, 7; 21, 18; Luc. 3, 350.
Fem., Mel. 2, 6, 6; Liv. 21, 19; Stat. S. 4, 6, 83; Juv. 15, 114; Flor. 2, 6, 3 al.; cf.: Graia Saguntos, Sil. 3, 178.
Doubtful form, Cic. Phil. 5, 10, 27; id. Div. 1, 24, 49; Liv. 21, 10; Plin. 16, 40, 79, § 216 et saep.
Hence, Săguntīnus (Săguntĭus, Sall. H. Fragm. 2, 22), a, um, adj., of or belonging to Saguntum, Saguntine: ficus, Cato, R. R. 8, 1: id. ap. Plin. 15, 18, 19, § 72: lutum (from which utensils were made), Mart. 8, 6, 2; 14, 108; cf. lagena, Juv. 5, 29: clades, Liv. 21, 19 fin.: rabies, id. 31, 17: ignis, Flor. 2, 6, 9 et saep.
Subst., in plur.: Săguntīni, ōrum, m., the people of Saguntum, the Saguntines, Liv. 21, 2; 21, 6 sq.; Auct. B. Hisp. 8; Front. Strat. 3, 10, 4.