Quick Definition
λευκαίνω v. I whiten
Strong's Definition
from 3022; to whiten
KJV Usage: make white, whiten
UBS Dictionary of the Greek New Testament
verb | aor. ἐλεύκανα · inf. λευκᾶναι | λευκός
79.28 · Features of Objects · Color
to make white, to whiten to cause something to become white This statement in REV 7:14 may raise numerous difficulties for receptors, since blood would not be regarded as an instrument for making anything white. It may be necessary, therefore, to introduce a marginal note explaining the figurative language and suggesting the rendering ‘to make them pure.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
λευκαίνω: 1 aor. ἐλεύκανα [cf. W. § 18, 1 d.; B. 41 (35)]; (λευκός) ; fr. Hom. down; Sept. for p37; to whiten, make white: ri, Mk. ix. 3; Rev. vii. 14.
Mounce Concise Greek Dictionary
λευκαίνω leukainō 2x
to brighten, to make white, Mk. 9:3; Rev. 7:14*
Abbott-Smith Greek Lexicon
λευκαίνω
(< λευκός), [in LXX: Ps 50 (51):7, Is 1:18 (לבן hi.), etc.;]
to whiten, make white: c. acc. rei, Mk 9:3, Re 7:14.†
Moulton & Milligan — Vocabulary of the Greek NT
λευκαίνω. We have not noted any instance of this verb in our sources, but for the corresponding λευκόω, “whiten,” cf. Sy2/ 587'4° (B.c. 329-8) τὸν βωμὸν τοῦ Πλούτωνος. . . λευκῶσαι, 70. 306% (Delphi—ii/B.c.) καὶ τὰ ἐνέχυρα αὐτῶν ἐμ πίνακας λελευκωμένους δύο ἀναγνόντω ἐν τᾶι ἐκκλησίαι. The subst. λεύκωμα, a white board used for public notices, is seen in such a passage as Sy// 510° (Ephesus—ii/B.c.) ἃ δ᾽ ἂν οἱ δικασταὶ κρίνωσιν, ἀναγράψαντες εἰς λεύκωμα ot εἰσαγωγεῖς κτλ.
Liddell-Scott-Jones — Greek-English Lexicon
λευκαίνω (leukainō) — to bleach. λευκαίνω, late aorist 1 infinitive λευκᾶναι (see. below): perfect passive λελεύκασμαι [Refs 3rd c.BC+]:—make white, λεύκαινον ὕδωρ ξεστῇς ἐλάτῃσιν [Refs 8th c.BC+]; plaster with whitening, λευκᾶναι τὰ λευκώματα [Refs]:—passive, to be or become white, [Refs 4th c.BC+], Diph.Siph.[same place]; to be clarified, of oil, Orib. [prev. cited]
2. cause to appear white, of the effect of dawn on lamplight, [Refs 5th c.BC+]
II. passive, have a sensation of whiteness, [Refs 2nd c.AD+]
III. intransitive, grow white, [LXX+5th c.BC+]; ἀφροῖο with foam, [Refs 2nd c.BC+]