cŏ-ŏrĭor, ortus, 4, v. dep., to come forth, stand up, arise, appear, rise, break forth (class. in prose and poetry; most freq. in Lucr. and the hist., esp. Liv.; in Cic. rare, perh. only once).
I In gen.: ubi materiaï Ex infinito sunt corpora plura coorta, Lucr. 5, 408; cf. id. 5, 367; 5, 414; 5, 838 al.: ignes pluribus simul locis, Liv. 26, 27, 5 et saep.: bellum, Caes. B. G. 3, 7: de integro coörtum est bellum, Liv. 21, 8, 2; cf.: foedum certamen, id. 1, 6, 4: seditio intestina coörta, id. 5, 12, 7: risus omnium cum hilaritate, Nep. Epam. 8, 5: dolores, Plaut. Pers. 2, 5, 12; Liv. 40, 24, 6; cf. Lucr. 6, 1091: accipere febrim calido fervore coortam, id. 6, 656.—
II In partic.
A Of natural phenomena, storms, etc., to arise, break out, begin , etc.: saeva tempestas, Lucr. 6, 458; so, tempestas, Cic. Verr. 2, 1, 18, § 46; Caes. B. G. 4, 28; 5, 10; id. B. C. 1, 48; Liv. 1, 16, 1 et saep.: ventus, Caes. B. G. 5, 43; Sall. J. 79, 6; Ov. M. 11, 512; Plin. 2, 36, 36, § 100 al.: taetra nimborum nox, Lucr. 4, 170; 6, 253.—Poet., of events, to happen : quasi naufragiis magnis multisque coörtis, Lucr. 2, 552.—
B Of a hostile rising, to stand up, rise, to break forth , etc.
α Absol. : Romani velut tum primum signo dato coorti pugnam integram ediderunt, Liv. 8, 9, 13; cf. id. 6, 18, 3; 9, 37, 11; Tac. A. 2, 11; id. H. 2, 70; 4, 60 al.: insidiae, id. ib. 2, 24; Liv. 3, 41, 1; cf. id. 2, 35, 3: tum libero conquestu coortae voces sunt, id. 8, 7, 22: magno in populo, cum seditio coorta est, Verg. A. 1, 148.—
β With prep.: coorti in pugnam, Liv. 21, 32, 8: in nos Sarmatarum ac Suevorum gentes, Tac. H. 1, 2; Liv. 7, 3, 9: in has rogationes nostras, id. 4, 3, 2: ad bellum, id. 4, 56,: adversus quos infestior coorta optimatium acies, id. 4, 9, 8.