Quick Definition
καῦμα, ατος, τό n.n. burning heat, heat
Strong's Definition
from 2545; properly, a burn (concretely), but used (abstractly) of a glow
KJV Usage: heat
UBS Dictionary of the Greek New Testament
noun, n. | -τος | 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’ (REV 7:16). 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
καῦμα, -ros, τό, (καίω), heat: of painful and burning heat, Rev. vii. 16; xvi.9. (Sept.; in Grk. writ. fr. Hom. down.)
Mounce Concise Greek Dictionary
καῦμα kauma 2x
heat, scorching or burning heat, Rev. 7:16; 16:9*
Abbott-Smith Greek Lexicon
καῦμα, -τος, τό
(< καίω), [in LXX for חֹם, חֹרֶב, etc.;]
heat: Re 7:16 16:9.†
Moulton & Milligan — Vocabulary of the Greek NT
καῦμα. P Lond 11668 (a.D. 42) (=III. p. 104) τὰ αὐτάρκη καύματα —adequate heat for the baths attached to a gymnasium, PSI II. 1845 (A.D. 292) καύματος ἐνόντος. See also Kazbel 6495 (Rome—iii/A. D. )\— οὐ χειμὼν λυπεῖ σ᾽, οὐ καῦμα, οὐ νοῦσος ἐνοχλεῖ.
Liddell-Scott-Jones — Greek-English Lexicon
καῦμα (kauma) — heat. καῦμα, ατος, τό, (καίω) burning heat, especially of the sun, καύματος ἔξ after sun-heat, [Refs 8th c.BC+]; πρὶν ἂν τὸ κ. παρέλθῃ the heat of the day, [Refs 5th c.BC+]: in plural, also of frost, [Refs 2nd c.AD+]
2. fever heat, [Refs 5th c.BC+]; of inflamed conditions, [Refs 5th c.BC+]
II. in plural, holes burnt by cautery, [Refs 5th c.BC+]
III. brand on cattle, [Refs]
IV. embers of sacrifices, [Refs 5th c.BC+]
V. firewood, [Refs 1st c.AD+]