Quick Definition
κατακλυσμός, οῦ, ὁ n.m. a deluge, flood
Strong's Definition
from 2626; an inundation
KJV Usage: flood
UBS Dictionary of the Greek New Testament
noun, m. | -οῦ | κατακλύζω
14.34 · Physical Events and States · Events Involving Liquids and Dry Masses
flood, deluge a large flood with destructive force (more intense and extensive than πλήμμυρα ‘flood,’ 14.33) In the NT κατακλύζω and κατακλυσμός occur only in 2 Peter and are used exclusively of the catastrophic flood in the time of Noah. Such a flood may be spoken of as ‘a flood that destroys’ or ‘much water which destroys.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
κατα-κλυσμός, -ov, ὁ, (κατακλύζω),, inundation, deluge: of Noah's deluge, Mt. xxiv. 38 sq.; Lk. xvii. 27; 2 Pet. ii. 5. (Sept. for 2331; Plato, Diod., Philo, Joseph., Plut.)
Mounce Concise Greek Dictionary
κατακλυσμός kataklysmos 4x
flood, deluge, Mt. 24:38, 39; Lk. 17:27; 2 Pet. 2:5*
Abbott-Smith Greek Lexicon
κατα-κλυσμός, -οῦ, ὁ
(< κατακλύζω), [in LXX chiefly for מַבּוּל, Ge 6:17, al.; also for שֶׁטֶף, Ps 31 (32):6, al.;]
a flood, deluge: Mt 24:38, 39, Lk 17:27, II Pe 2:5.†
Moulton & Milligan — Vocabulary of the Greek NT
κατακλυσμός is supplied by the editor in BGU IV. 112157 (B.c. 5) ἐὰν δὲ συμβῇ «αὐτοῖς πρ. . . .. - - - ἔφοδον γενέσθαι ἢ κατακλυσμὸν ἢ ξυλείας] ἐκκοπήν. The word survives in MGr= “ inundation,’”’ “ flood.
Liddell-Scott-Jones — Greek-English Lexicon
κατακλυσμός (kataklusmos) — flood. κατα-κλυσμός, ὁ, flood, [Refs 5th c.BC+]; inundation, [Refs 5th c.BC+]
2. metaphorically, κ. τῶν πραγμάτων political deluge, [Refs 4th c.BC+]
II. Medic.. affusion, douche, [Refs]