Quick Definition
καθαίρω v. I cleanse, purify, prune
Strong's Definition
from 2513; to cleanse, i.e. (specially) to prune; figuratively, to expiate
KJV Usage: purge
UBS Dictionary of the Greek New Testament
verb | κατά + αἴρω | καθαρός
79.49 · Features of Objects · Clean, Dirty
to make clean, to cleanse, to clean to cause something to become clean In JHN 15:2 the meaning of καθαίρω may also be understood as ‘to prune branches’ (see 43.12), thus playing on two distinct meanings of καθαίρω.
43.12 · Agriculture
to take away, to prune, to cut off to cut away or cut back unproductive branches or to cut back productive branches so they can produce better
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
καθαίρω; pf. pass. ptep. κεκαθαρμένος ; (καθαρός) ; to cleanse, prop. from filth, impurity, οἴου; trees and vines (from useless shoots), fo prune, Jn. xv. 2 (δένδρα. . . ὑποτεμνόμενα καθαίρεται, Philo de agric. ὃ 2 [cf. de somniis ii. § 9 mid.]); metaph. from guilt, to expiate: pass. Heb. x. 2 RG [see καθαρίζω, init.], (Jer. xiii. 27; and so in Grk. writ. fr. Hdt. down). [Comp.: δια-, ἐκ-καθαίρω.}
Mounce Concise Greek Dictionary
καθαίρω kathairō 1x
to cleanse from filth; to clear by pruning, prune, Jn. 15:2; met. to cleanse from sin, make expiation
Abbott-Smith Greek Lexicon
καθαίρω
(< καθαρός), [in LXX: Is 28:27 (דּוּשׁ ho.), II Ki 4:6, Je 51:39 א* ;]
to cleanse: of pruning, Jo 15:2 (cf. καθαρίζω).†
Moulton & Milligan — Vocabulary of the Greek NT
καθαίρω. With the use of this verb in Jn 155 we may compare P Lille I. 524 (B.c. 260-59) ἐκ τοῦ ἰδίου ξυλοκοπήσει Kal τὴγ γῆν καθαρεῖ. Cf. P Tebt II. 373!° (A.p. 110-1) ἐφ᾽ ᾧ ὃ “Ἥρων μετρήσι kal καθαρεῖ καθ᾽ ἔτος εἰς τὸ δημόσιον .. . [τ]ὰ . . . ἐκφόρια, “fon condition that Heron shall measure out and winnow the produee (cf. 2 Kings 45) annually for the State.” The verb is common in the inscrr. of ceremonial cleansing, e.g. Jichel 694°% (B.C. 91) ἔστι δὲ ἃ δεῖ παρέχειν πρὸ τοῦ ἄρχεσθαι τῶν μυστηρίων: ἄρνας δύο λευκούς, . . . καὶ ὅταν ἐν τῶι θεάτρωι καθαίρει, χοιρίσκους τρεῖς : οἵ. Kazbel το 4} ἴ---*Hv0aSe Διάλογος καθαρῶι πυρὶ γυῖα καθήρας ἀσκητὴς σοφίης dyer’ ἐς ἀθανάτους. The compound ἀνακαθαίρω is found in P Lond 1177 (a.D, 113) (=III. p. 190).
Liddell-Scott-Jones — Greek-English Lexicon
καθαίρω (kathairō) — to prune. κᾰθαίρω, future κᾰθᾰρῶ [Refs 5th c.BC+]: aorist 1 ἐκάθηρα [Refs 8th c.BC+]; ἐκάθᾱρα is found in codices of [Refs 5th c.BC+], and commonly in later Gr., [Refs 4th c.BC+]; see below middle: perfect κεκάθαρκα (ἐκ-) [Refs 5th c.BC+]:— middle, future καθαροῦμαι [Refs 5th c.BC+]: aorist ἐκαθηράμην [Refs 5th c.BC+]; later ἐκαθᾱράμην [Refs 4th c.BC+]: passive, future καθαρθήσομαι [Refs 2nd c.AD+]: aorist ἐκαθάρθην [Refs 5th c.BC+] is falsa lectio in [Refs 2nd c.AD+]: perfect κεκάθαρμαι [Refs 5th c.BC+]: (καθαρός):
I. cleanse, of things, καθήρατε δὲ κρητῆρας [Refs 8th c.BC+] [prev. cited]; of wounds, [Refs 5th c.BC+]; γῆν clear of weeds,[Refs 3rd c.BC+], etc.; χρυσόν purify, refine, [Refs 5th c.BC+]: metaphorically, purge, clear a land of monsters and robbers, [Refs 5th c.BC+]:—passive, τὴν νηδὺν ἀνασχισθεῖσαν καὶ καθαρθεῖσαν [Refs 5th c.BC+]
I.2. in religious sense, purify, [δέπας] ἐκάθηρε θεείῳ by fumigating with sulphur, [Refs 8th c.BC+]; κ. τινὰ φόνου purify him from blood, [Refs 5th c.BC+]; Δῆλον κ. [Refs 5th c.BC+]; στόλον κ., Latin classem lustrare, [Refs 1st c.BC+]:— middle, purify oneself, get purified, [Refs 5th c.BC+]; καθήρασθαι στόμα keep one's tongue pure, [Refs 4th c.BC+]:—passive, κεκαθαρμένος καὶ τετελεσμένος [Refs 5th c.BC+]
I.3. in Medicine texts, purge, evacuate, either by purgatives or emetics, κ. κάτω ἢ ἄνω [Refs 5th c.BC+]:—middle, κατὰ κύστιν ἐκαθήρατο [Refs 5th c.BC+] —passive [Refs], etc.; also of menstruation, [Refs]; of the after-birth, τὰ λοχεῖα κ. [Refs]; καθαίρων, ὁ, name for ἶρις, Ps.-[Refs 1st c.AD+]
I.4. prune a tree,i.e.clear it of superfluous wood, [NT]
I.5. sift, winnow grain, [Refs 2nd c.AD+]
I.6. metaphorically, ={μαστιγόω}, [Refs 3rd c.BC+]
II. of the thing removed by purification, purge away, wash off, λύματα πάντα κάθηρεν [Refs 8th c.BC+]; clear away, τὰ λῃστικά [Refs 4th c.BC+]; also perhaps, clear up, explain an action, τὴν σύστασιν [Refs 4th c.BC+]
III. with double accusative, αἷμα κάθηρον.. Σαρπηδόνα cleanse him of blood, wash the blood off him, [Refs 8th c.BC+] —passive, καθαίρομαι γῆρας I am purged of old age, [Refs 5th c.BC+]
