I.of or belonging to the north, northern, north-: “pars (terrae), circulus,” Varr. R. R. 1. 2, 4; Vitr. 9, 6: “plaga,” Sen. Q. N. 4, 5, 2: “latus,” id. ib. 5, 16, 6; Plin. 2, 70, 70, § 177: “oceanus,” id. 9, 17, 30, § 64: “venti,” Col. 11, 2, 21.—Plur. subst.: sep-tentrĭōnālĭa , ĭum, n., the northern regions, Plin. 11, 14, 14, § 33: “Africae et Numidiae,” id. 6, 34, 39, § 213: “Britanniae,” Tac. Agr. 10.
septentrĭōnālis , e, adj. septentriones, II.,