Quick Definition
αἰώνιος, ία, ιον Adj eternal, unending
Strong's Definition
from 165; perpetual (also used of past time, or past and future as well)
KJV Usage: eternal, for ever, everlasting, world (began)
UBS Dictionary of the Greek New Testament
adjc. | -ον | αἰών
67.96 · Time · Duration of Time without Reference to Points or Units of Time: Time, Spend Time, Always, Eternal, Old, Immediately, Young
eternal pertaining to an unlimited duration of time The most frequent use of αἰώνιος in the NT is with ζωή 'life', for example, ἵνα πᾶς ὁ πιστεύων ἐν αὐτῷ ἔχω ζωὴν αἰώνιον ‘so that everyone who believes in him may have eternal life’ JHN 3:15. In combination with ζωή there is evidently not only a temporal element, but also a qualitative distinction. In such contexts, αἰώνιος evidently carries certain implications associated with αἰώνιος in relationship to divine and supernatural attributes. If one translates ‘eternal life’ as simply ‘never dying,’ there may be serious misunderstandings, since persons may assume that ‘never dying’ refers only to physical existence rather than to ‘spiritual death.’ Accordingly, some translators have rendered ‘eternal life’ as ‘unending real life,’ so as to introduce a qualitative distinction.
MAT 18:8 · MAT 19:16 · MAT 19:29 · MAT 25:41 · MAT 25:46 · MAT 25:46 · MRK 3:29 · MRK 10:17 · MRK 10:30 · MRK 16:8 · LUK 10:25 · LUK 16:9 · LUK 18:18 · LUK 18:30 · JHN 3:15 · JHN 3:16 · JHN 3:36 · JHN 4:14 · JHN 4:36 · JHN 5:24 · JHN 5:39 · JHN 6:27 · JHN 6:40 · JHN 6:47 · JHN 6:54 · JHN 6:68 · JHN 10:28 · JHN 12:25 · JHN 12:50 · JHN 17:2 · JHN 17:3 · ACT 13:46 · ACT 13:48 · ROM 2:7 · ROM 5:21 · ROM 6:22 · ROM 6:23 · 2CO 4:17 · 2CO 4:18 · 2CO 5:1 · GAL 6:8 · 2TH 1:9 · 2TH 2:16 · 1TI 1:16 · 1TI 6:12 · 1TI 6:16 · 2TI 2:10 · TIT 1:2 · TIT 3:7 · PHM 1:15 · HEB 5:9 · HEB 6:2 · HEB 9:12 · HEB 9:14 · HEB 9:15 · HEB 13:20 · 1PE 5:10 · 2PE 1:11 · 1JN 1:2 · 1JN 2:25 · 1JN 3:15 · 1JN 5:11 · 1JN 5:13 · 1JN 5:20 · JUD 1:7 · JUD 1:21 · REV 14:6
67.133 · Time · Duration of Time with Reference to Some Point of Time: Until, Delay, Still, From
Collocation: πρὸ χρόνων αἰωνίων · χρόνοις αἰωνίοις
since all time, from all ages past, from the beginning of time an exceedingly long period of time from an assumed beginning up to the present
1 There is no real distinction in meaning between the terms ἀΐδιος and αἰώνιος. The term ἀΐδιος, however, is in certain respects a somewhat more technical expression, particularly popular among philosophers.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
αἰώνιος, -ov, and (in 2 Th. ii. 16; Heb. ix. 12; Num. xxv. 13; Plat. Tim. p. 38 b. [see below]; Diod. i. 1; [ef. WH. App. p. 157; W. 69 (67); B. 26 (23)]) -os, -a, τον, (αἰών); 1. without beginning or end, thal which always has been and always will be: θεὸς, Ro. xvi. 26, (ὁ μόνος αἰώνιος, 2 Mace. i. 25); πνεῦμα, Heb. ix. 14. 2: without beginning: χρόνοις αἰωνίοις, Ro. xvi. 253 πρὸ χρόνων αἰωνίων, 2 Tim. i. 9; Tit. i. 2; εὐαγγέλιον a σοβροὶ whose subject-matter is eternal, i. e. the saving purpose of God adopted from eternity, Rev. xiv. 6. 3. withoul end, never to cease, everlasting: 2 Co. iv. 18 (opp. to πρόσκαιρος) ; αἰώνιον αὐτόν, joined to thee forever as a sharer of the same eternal life, Philem. 15; βάρος d0éns, 2 Co. iv. 17; βασιλεία, 2 Pet. i. 11; δόξα, 2 Tim. ii. 10; 1 Pet. v.10; ζωή (see ζωή, 2 b.); κληρονομία, Heb. ix. 15; λύτρωσις, Heb. ix. 12; παράκλησις, 2 Th. ii. 16; σκηναί, abodes to be occupied forever, Lk. xvi. 9 (the habitations of the blessed in heaven are referred to, ef. Jn. xiv. 2, [also, dabo eis tabernacula aeterna, quae praeparaveram illis, 4 Esdr. (Fritzsche 5 Esdr.) ii. 11]; similarly Hades is called αἰώνιος τόπος, Tob. iii. 6, ef. Eccl. xii. 5); σωτηρία, Heb. v. 9; [so Mk. xvi. WH, in the (rejected) ‘Shorter Conclusion’]. Opposite ideas are: κόλασις, Mt. xxv. 46; κρίμα, Heb. vi. 2; κρίσις, Mk. iii. 29 (Rec. [but L T WH Tr txt. ἁμαρτήματος ; in Acta Thom. § 47, p. 227 Tdf., ἔσται σοι τοῦτο εἰς ἄφεσιν ἁμαρτιῶν καὶ λύτρον αἰωνίων παραπτωμάτων, it has been plausibly conjectured we should read λύτρον αἰώνιον (cf. Heb. ix. 12)]); ὄλεθρος [Lehm. txt. ὀλέθριος, 2 Th. i. 9, (4 Mace. x. 15); πῦρ, Mt. xxv. 41, (4 Mace. xii. 12 αἰωνίῳ πυρὶ x. βασάνοις, αἵ εἰς ὅλον τὸν αἰῶνα οὐκ ἀνήσουσί σε). [Of the examples οὗ αἰώνιος from Philo (with whom it is less common than ἀΐδιος, 4. v-, of which there are some fifty instances) the following are noteworthy: de mut. nom. § 2; de caritate ὃ 17; κόλασις ai. frag. in Mang. ii. 667 fin. (Richter vi. 229 mid.) ; ef. de praem. et poen. ὃ 12. Other exx. are de alleg. leg. iii. § 70; de poster. Caini § 35; quod deus immut. § 30; quis rer. div. her. § 58; de congressu quaer. erud. § 19; de prof. § 38; de somn, ii. § 43; de Josepho § 24; guod omn. prob. lib. § 4, § 18; de ebrietate § 32; de Abrah. § 10; ζωὴ ai.: de prof. § 15; θεὸς (δ) αἰ. : de plan ᾽ ἐκ ἀκαθαρσία tat. § 2, § 18 (bis), § 20 (bis); de mundo ὃ 2. From. Josephus: antt. 7, 14, 5; 12, 7,3; 15, 10, 5; b.j. 1, 33, 2; 6, 2, 1; κλέος ai.: antt. 4, 6,5; b.j. 3, 8,5; μνήμη ai.: antt. 1, 13, 4; 6, 14,4; 10, 11,7; 15, 11,1: οἶκον μὲν αἰώνιον ἔχεις (of God), antt. 8, 4,2; ἐφυλάχθη ὁ ᾿Ιωάννης δεσμοῖς αἰωνίοις, ΠΣ. τρί 984s Syn. ἀΐδιος, αἰώνιος: ἀΐδ. covers the complete philosophic idea — without beginning and without end ; also either without beginning or without end; as respects the past, it is applied to what has existed time out of mind. αἰώνιος (fr. Plato on) gives prominence to the immeasurableness of eternity (while such words as συνεχής continuous, unintermitted, διατελής perpetual, lasting to the end, are not so applicable to an abstract term, like αἰών) ; αἰώνιος accordingly is esp. adapted to supersensaous things, see the N. T. Cf. Tim. Locr. 96 c. θεὸν δὲ τὸν μὲν αἰώνιον νόος dpi) μόνος etc.; Plat. Tim. 37 d. (and Stallbaum ad loc.); 38 b. ¢.; legg. x. p. 904 a. ἀνώλεθρον δὲ ὃν γενόμενον, GAA’ οὐκ αἰώνιον. Cf. also Plato’s διαιώνιος (Tim. 38 b.; 39 e.). Schmidt ch. 45.]
Mounce Concise Greek Dictionary
αἰώνιος aiōnios 71x
indeterminate as to duration, eternal, everlasting
Abbott-Smith Greek Lexicon
αἰώνιος, -ον (as usual in Attic), also -α, -ον. II Th 2:16, He 9:12;
(< αἰών), [in LXX chiefly for עוֹלָם;]
age-long, eternal, of that which is without either beginning or end: Ro 16:26, He 9:14;
of that which is without beginning: Ro 16:25, II Ti 1:9, Tit 1:2;
of that which is without end (MM, VGT, s.v.): σκηναί, Lk 16:9 οἰκία, II Co 5:1; διαθήκη, He 13:20; εὐαγγέλιον, Re 14:6; παράκλησις, II Th 2:16; λύτρωσις, He 9:12; κληρονομία, ib. 15; κόλασις, Mt 25:46; κρίμα, He 6:2; κρίσις, Mk 3:29; ὄλεθρον, II Th 1:9; πῦρ, Mt 18:8; freq. c. ζωή, q.v.
SYN.: ἀΐδιος, q.v.
Liddell-Scott-Jones — Greek-English Lexicon
αἰώνιος (aiōnios) — eternal. αἰώνιος, ον, also α, ον [NT+5th c.BC+]:— lasting for an age (αἰών 11), perpetual, eternal (but distinct from ἀΐδιος, [Refs 5th c.BC+]; κακά, δεινά, [NT+5th c.BC+]; αἰ. διαθήκη, νόμιμον, πρόσταγμα, [LXX+NT+3rd c.AD+]; κόλασις [NT+6th c.AD+]
2. holding an office or title for life, perpetual, γυμνασίαρχος[Refs]
3. = Latin saecularis, [Refs 2nd c.AD+]
4. adverb -ίως eternally, νοῦς ἀκίνητος αἰ. πάντα ὤν[Refs 5th c.AD+]; perpetually, μισεῖν [Refs 5th c.BC+]
5. αἰώνιον, τό, ={ἀείζωον τὸ μέγα}, Ps.-[Refs 1st c.AD+]