Quick Definition
deep sleep, stupor
Strong's Definition
a prickling (sensation, as of the limbs asleep), i.e. (by implication, (perhaps by some confusion with G3506 (νεύω) or even with G3571 (νύξ))) stupor (lethargy)
Derivation: from G2660 (κατανύσσω);
KJV Usage: slumber
Thayer's Greek Lexicon
κατάνυξις, κατανύξεως, ἡ (κατανύσσω, which see);
1. a pricking, piercing (Vulg.compunctio).
2. severe sorrow, extreme grief.
3. insensibility or torpor of mind, such as extreme grief easily produces; hence, πνεῦμα κατανύξεως, a spirit of stupor, which renders their souls torpid, i. e. so insensible that they are not affected at all by the offer made them of salvation through the Messiah, Rom_11:8 from Isa_29:10 the Sept. (where the Hebrew ϊΗΜψΐγΕΜξΘδ ψεΜηΗ, a spirit of deep sleep, is somewhat loosely so rendered; οἶνος κατανύξεως for ϊΗΜψΐςΕμΘδ ιΗιΔο, wine which produces dizziness, reeling, German Taumelwein, Psa_59:5 ()). Not found in secular authors. Cf. Fritzsche's full discussion of the word in his Commentary on Romans, vol. ii., p. 558ff; (cf. Winers Grammar, 94 (90); Lightfoot 'Fresh Revision' etc., p. 139 note).
Mounce Concise Greek Dictionary
κατάνυξις katanyxis 1x
in NT deep sleep, stupor, dullness, Rom_11:8
Abbott-Smith Greek Lexicon
† κατά -νυξις , -εως , ἡ
( < κατανύσσω , q.v. ),
[in LXX : Psa_60:3 ( H8653 ), Isa_29:10 ( H8639 ) * ;]
1. a pricking.
2. (Perhaps through resembl. of κατανύσσω to -νυστάζω ), torpor of mind, stupefaction: Rom_11:8 ( LXX ) ( v . ICC , in l ; Field, Notes , 157).†
Moulton & Milligan — Vocabulary of the Greek NT
κατάνυξις [page 330]
This NT ἅπ . εἰρ . ( Rom_11:8 ) occurs in Pelagia-Legenden , p. 3 .7 πάσης γὰρ ὠφελείας καὶ κατανύξεως πεπλήρωται τὸ διήγημα , where it seems to have the unusual meaning of incitement, stimulus.
Liddell-Scott — Intermediate Greek Lexicon
κατάνυξις κατάνυξις, εως "stupefaction, slumber", NTest.
STEPBible — Tyndale Abridged Greek Lexicon
κατά-νυξις, -εως, ἡ
(κατανύσσω, which see), [in LXX: Psa.60:3 (תַּרְעֵלָה), Isa.29:10 (תַּרְדֵּמָה)* ;]
__1. a pricking.
__2. (Perhaps through resembl. of κατανύσσω to -νυστάζω), torpor of mind, stupefaction: Rom.11:8 (LXX) (see ICC, in l; Field, Notes, 157).†
(AS)
