I.straight up, going upwards, steep, uphill, Hes., Eur.; ὄρθιον ἑτέραν (sc. ὁδὸν) ἐπορεύοντο Thuc.; so, ὄρθιον or πρὸς ὄρθιον ἰέναι to march up-hill, Xen.; πρὸς ὄρθιον ἄγειν to lead by a steep path, id=Xen.:— τὰ ὄρθια the country from the coast upwards, Hdt.
2.upright, standing, id=Hdt., Eur.:— esp. of hair, Trag.: of animals, rampant, Pind.
II.of the voice, high-pitched, loud, shrill, Trag.; neut. as adv., ὄρθια ἤϋσε she cried aloud, Il.; ὄρθιον φωνεῖν Pind.