Quick Definition
ἐκτένεια, ας, ἡ n.f. earnestness, strenuousness, intentness
Strong's Definition
from 1618; intentness
KJV Usage: X instantly
UBS Dictionary of the Greek New Testament
noun, f. | -ας | ἐκτείνω
25.70 · Attitudes and Emotions · Be Eager, Be Earnest, In a Devoted Manner
earnestness, eager perseverance a state of eagerness involving perseverance over a period of time
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἐκ-τένεια, -as, ἡ, (ἐκτενής), a later Grk. word, (cf. Lob. ad Phryn. p. 311); 8. prop. extension. Ὅ. intentness (of mind), earnestness: ἐν éxreveia, earnestly, Acts xxvi. 7. (2 Mace. xiv. 38; Judith iv. 9. Cf. Grimm on 3 Mace. vi. 41 [where he refers to Cic. ad Att. 10, 17, 1
Mounce Concise Greek Dictionary
ἐκτένεια ekteneia 1x
pr. extension; in NT intenseness, intentness; ἐν ἐκτενείᾳ, intently, perseverance, earnestness, Acts 26:7*
Abbott-Smith Greek Lexicon
**† ἐκ-τένεια, -ας, ἡ
(< ἐκτενής), [in LXX: Jth 4:9, II Mac 14:38, III Mac 6:41 * ;]
zeal, intentness, earnestness (cf. Deiss., BS, 262): Ac 26:7.†
Liddell-Scott-Jones — Greek-English Lexicon
ἐκτένεια (ekteneia) — earnestness. ἐκτέν-εια, ἡ, zeal, assiduousness, [Refs 3rd c.BC+]; 'gush', 'empressement', [Refs 2nd c.BC+]; ἐν ἐκτενείᾳ eagerly, [LXX+NT]; μετὰ πάσης ἐ.[LXX]
II. abundance, ξύλων [Refs 2nd c.AD+]
III. extension, [Refs 5th c.AD+]