Quick Definition
καύσων, ῶνος, ὁ n.m. a scorching heat, hot wind
Strong's Definition
from 2741; a glare
KJV Usage: (burning) heat
UBS Dictionary of the Greek New Testament
noun, m. | -ωνος | καίω
14.67 · Physical Events and States · Burning
heat, scorching heat heat sufficiently intense to cause suffering or burning In some languages the effect of heat may be described simply as ‘heat will not scorch them’ or ‘they will not suffer because of heat.’ Such expressions, however, may be ambiguous because they might mean that the individuals involved would be able to easily withstand the heat. The meaning of the biblical passage, however, is that there would be no heat to cause them harm.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
καύσων, -wvos, 0; 1. burning heat of the sun: Mt. xx.12; Lk. xii.55; Jas.i. 11, [4]. refer all these pass. to the next head]; (Is. xlix. 10; [Gen. xxxi. 40 Alex.; ef. Judith viii. 3]; Sir.xviii.16; Athen. 3 p. 73 b.). 2. Eurus, a very dry, hot, east wind, scorching and drying up everything; for Ὁ; Job xxvii. 21; Hos. xii. 1; ἄνεμος καύσων, Jer. xviii. 17; Ezek. xvii. 10; Hos. xiii. 15; πνεῦμα καύσων, Jon. iv. 8, [ef. Hos. xii. 1]; (on this wind οἵ. Schleusner, Thes. ad Sept. iii. p. 297; Win. RWB. [also BB. DD.] s. v. Wind). Many suppose it to be referred to in Jas. i. 11; yet the evils there mentioned are ascribed not to the καύσων, but to the ἥλιος.
Mounce Concise Greek Dictionary
καύσων kausōn 3x
fervent scorching heat; the scorching of the sun, Mt. 20:12; hot weather, a hot time, Lk. 12:55; the scorching wind of the East, Eurus, Jas. 1:11*
Abbott-Smith Greek Lexicon
† καύσων, -ωνος, ὁ
(< καίω), [in LXX: Ge 31:40 א (חֹרֶב), Is 49:10 (שָׁרָב), Jb 27:21, Ho 12:1 (2), 13:15, Jh 4:8, Je 18:17, Ez 17:10 19:12 (קָדִים); Je 28 (51):1, Da TH 3:(67) Jth 8:3, Si 18:16 31 (34):16 43:22*;]
burning heat (Ge, Isa (?), Jth 8:3, Si 18:16): Mt 20:12, Lk 12:55 (Ja 1:11, AV).
a hot wind from the east (Heb. קָדִים, v. LXX, Ge 31:40, Is 49:10, Jb 27:21, Ho 12:1 (2), 13:15, Jh 4:8, Je 18:17, Ez 17:10 19:12, Je 28 (51):1, Da TH 3:(67) Jth 8:3, Si 18:16 31 (34):16 43:22), the modern sirocco (v. CGT on Am 4:9): Ja 1:11 (RV, the scorching wind; cf. R, mg., the hot wind, Mt 20:12, Lk 12:55).†
Moulton & Milligan — Vocabulary of the Greek NT
καύσων. This late word means ‘‘ burning heat’ in Mt 2015, Lk 1255, and probably Jas 114: cf. Gen 314° and Athenaeus iii. Ρ- 735 μελιλώτινοι στέφανοι πάνυ εὐώδεις καὶ καύσωνος ὥρᾳ ψυκτικώτατοι. In the LXX it is more frequent of a “scorching wind,” or ‘‘sirocco,” and Hort prefers this meaning in Jas 7c. In Dioscor. i. 21. 149 it is used as a medical term, ‘‘heat in the stomach,’’ and survives in MGr = ‘‘heat” (see Kennedy Sources, p. 154).
Liddell-Scott-Jones — Greek-English Lexicon
καύσων (kausōn) — heat. καύσ-ων, ωνος, ὁ, burning heat, summer heat, [NT+3rd c.BC+]; ἄνεμος καύσων sirocco, [LXX]; κ. alone,[LXX+NT+1st c.AD+]
2. κ. στομάχου heartburn, [Refs 1st c.AD+]
3. κ. πυρετός, ={καῦσος} (A) 1, [Refs 6th c.AD+]
II. ={διψάς}[Refs 2nd c.AD+]