Lexical Definition

‎ὀρθός‎ orthós (or-thos') upright ^G:A
probably from the base of ‎ὄρος‎

straight, upright.

• right (as rising), i.e. (perpendicularly) erect (figuratively, honest), or (horizontally) level or direct

Abbott-Smith

ὀρθός, -ή, -όν, [in LXX chiefly for יָשָׁר;]
straight;
(a) in height, straight, upright: Ac 14:10;
(b) in line, straight, direct: fig., He 12:13(LXX).†

Abbott-Smith References

Liddell-Scott-Jones

ὀρθός, ή, όν,

straight,

__I in height, upright, standing, [Refs 8th c.BC+], who commonly joins it with στῆναι, στῆ δ᾽ ὀρθός [Refs 8th c.BC+]; ὀρθαὶ τρίχες ἔσταν [Refs 8th c.BC+]; ὀρθὸν οὖς ἵστησι pricks up his ear, [Refs 5th c.BC+]; applied to the erect posture of man, [Refs 4th c.BC+]; ὀ. θηρίον, of man, [Refs 4th c.BC+]; of buildings, standing with their walls entire, [τὸ Πάνακτον] ὀρθὸν παραδοῦναι [Refs 5th c.BC+]; of a standing crop, [Refs 2nd c.AD+] adverb, ὀρθῶς ἑστῶτες [Refs 4th c.BC+]
__I.b Geometry texts, at right angles to.., εὐθεῖα πρὸς ἐπίπεδον ὀρθή ἐστιν ὅταν.. [Refs 3rd c.BC+]
__I.c Astrology texts, ὀρθὰ ζῴδια signs which rise vertically, opposed to πλάγια, [Refs 2nd c.AD+]
__II in line, straight (opposed to σκολιός crooked and πλάγιος aslant), ἀντ᾽ ἠελίου τετραμμένος ὀρθός straight, right opposite the sun, [Refs 8th c.BC+]; ποιῶν ὀρθὰ πάντα πρὸς κανόνα [Refs 2nd c.BC+]; ὀ. τρῶμα longitudinal to the muscle, opposed to ἐπικάρσιος, [Refs 6th c.BC+]; ὀρθὴν κελεύεις, i. e. ὀρθὴν ὁδόν με ἰέναι κ., [Refs 5th c.BC+]; so ὀρθὴν ἄνω δίωκε (i.e. όδόν) [Refs 4th c.BC+]; δι᾽ ὀρθῆς τήνδε ναυκληρεῖς πόλιν (i.e. ὁδοῦ) [Refs 5th c.BC+]; εἰς ὀρθὸν ἀποδοῦναι to face the front originally held, [Refs 4th c.BC+]; also ὀρθᾷ χερί straightway, [Refs 5th c.BC+]; ὀρθῷ ποδί[Refs]; but τιθέναι ὀρθὸν πόδα is probably to put the foot out, as in walking, [Refs 5th c.BC+]
__II.2 βλέπειν ὀρθά, opposed to being blind, [Refs 5th c.BC+]recovered his sight, [Refs 2nd c.AD+]; ἐξ ὀμμάτων ὀ.. κἀξ ὀρθῆς φρενός [Refs 5th c.BC+]
__III metaphorically,
__III.1 right, safe, prosperous:
__III.1.a partly from signification[Refs]set them up, restored, [Refs 5th c.BC+]; so ὀρθὸν ἀστάσας (= ἀναστήσας) [Refs 4th c.BC+]; ἐς ὀρθὸν ἱστάναι τινά [Refs 5th c.BC+]; ταύτης ἔπι (i.e. χθονός) πλέοντες ὀρθῆς (the state being represented as a ship) [Refs 5th c.BC+]
__III.1.b partly from signification [Refs 5th c.BC+]; κατ᾽ ὀρθὸν οὐρίσαι to speed in prosperous course, [Refs]
__III.2 right, true, correct, ἄγγελος, ἀγγελία, νόος, [Refs 5th c.BC+]; ὄρθ᾽ ἀκούειν to be rightly, truly called, [Refs 5th c.BC+]strictly speaking, in very truth, [Refs]: so in adverb, ὀρθῶς λέγειν [Refs 5th c.BC+]; ὀ. ἔχει it is right, with infinitive, [Refs 5th c.BC+]: in answers, rightly, exactly, [Refs 5th c.BC+]: superlative, ὀρθότατα καλεόμενος [Refs 5th c.BC+]; φωνεῖν δίκης ἐς ὀρθόν[Refs 5th c.BC+]
__III.3 true, real, genuine, ὀ. πολιτεῖαι, opposed to παρεκβάσεις, [Refs 4th c.BC+]; ὀ. μανία real madness, [Refs 3rd c.BC+] adverb -θῶς really, truly, τοὺς ὀ. φιλομαθεῖς [Refs 5th c.BC+]
__III.4 upright, just, ἐμμένειν ὀ. νόμῳ [Refs 5th c.BC+]uprightness, [Refs 5th c.BC+]; ἐπιστήμη ἐνοῦσα καὶ ὀ. λόγος (see. λόγος IV. I) [Refs]; ὁ ὀ. λόγος διὰ πάντων ἐρχόμενος (see. λόγος [Refs 3rd c.BC+]; ὀ. λόγοι virtues on the intellectual side, [Refs 1st c.BC+]. adverb ὀρθῶς rightly, justly, [Refs 5th c.BC+]; ὀ. καὶ νομίμως [Refs 5th c.BC+]
__III.5 of persons, 'straight', straightforward, σμικροὶ καὶ οὐκ ὀρθοὶ τὰς ψυχάς [Refs 5th c.BC+]
__III.6 on tiptoe, full of expectation, excited, ὀρθῆς τῆς πόλεως γενομένης διά τι [Refs 5th c.BC+]
__IV ἡ ὀρθή,
__IV.1 (i.e. ὁδός) see above [Refs]
__IV.2 ὀ. γωνία right angle, [Refs 5th c.BC+]; so ὀ. alone, [Refs 4th c.BC+] to cut at right angles, [Refs 3rd c.BC+]; εἴ τις δείξειεν ὅτι αἱ ὀρθαὶ οὐ συμπίπτουσι.. that right angles do not meet (short for 'that two straight lines making, with a third, interior angles equal to two right angles, etc.'), [Refs 4th c.BC+]; τὸ δυσὶν ὀρθαῖς the theorem that the angles of a triangle are together equal to two right angles, [Refs]; ὀρθὸς κῶνος, κύλινδρος, a right cone, cylinder, [Refs 3rd c.BC+]
__IV.3 (with or without πτῶσις) nominative, Latin casus rectus, opposed to the oblique cases, [Refs 2nd c.BC+]
__V ὀρθά active verbs, opposed to ὕπτια (passive) and οὐδέτερα (neuter), [Refs 3rd c.BC+]
__VI ὀ. τόνος real or unmodified (compare above [Refs 2nd c.AD+]