A.upright posture, erectness, X.Mem.1.4.11 ; of man, Arist.PA658a22, al.
2. straightness, opp. κάμψις, ib.654b5.
3. fixity, “ὀμμάτων” Hp.Coac.223.
II. metaph., rightness, correctness, “τῶν ἐπῶν” Ar.Ra.1181 ; “λογισμῶν” Pl.Ti.47c ; “μουσικῆς” Id.Lg.655d ; “λόγων” Gorg.Fr.6 D.; “ἡ τῶν ὀνομάτων ὀ.” Pl.Cra.422b sq., etc.
III. use of the nominative case in narrative, Hermog.Id.1.3, al.