exortīvus, a, um, adj. [2. exortus].
I Of or belonging to the rising of the heavenly bodies, ascendant (post-Aug.): mensura, Plin. 7, 49, 50, § 160.—
II Transf., towards the sunrise , eastern : pars, Plin. 18, 34, 77, § 338: Oceanus, id. 37, 2, 11, § 39.—In the neutr. plur. subst. : Narbonensis Galliae exortiva, the eastern part , Plin. 6, 34, 39, § 215.