Lexical Definition

‎λουτρόν‎ loutrón (loo-tron') washing ^G:N-N
from ‎λούω‎

washing.

• a bath, i.e. (figuratively), baptism

Abbott-Smith

λουτρόν, -οῦ, τό (< λούω), [in LXX: Ca 4:2 6:5, (6) (רַחְצָה), Si 31 (34):25*;]
a washing, bath: τ. ὕδατος, Eph 5:26; τ. παλιγγενεσίας, Tit 3:5 (v. AR, Eph. 5:26).†

Abbott-Smith References

Liddell-Scott-Jones

λουτρόν, τό,

in [Refs 8th c.BC+] always λοετρόν, but contraction form in [Refs 8th c.BC+]; Doric dialect λωτρόν, [Refs 5th c.AD+]: (λούω):— bath, bathing-place, [Refs 8th c.BC+] hot bath, [Refs 8th c.BC+]; σίτοισι καὶ λουτροῖσι in matters of eating and washing, [Refs 8th c.BC+]: in plural, bathing-establishment, τὰ δημόσια λ. [Refs 3rd c.AD+]

__2 water for bathing or washing, ὑδάτων ἐνεγκεῖν λουτρά [Refs 5th c.BC+]; ἐν λουτροῖς while bathing, [Refs 5th c.BC+]; λοῦσαί τινα λουτρόν give one a bath, wash one with water, [Refs 5th c.BC+]; λοῦσθαι λουτρόν bathe, [λουτρόν ἐστιν, οὐ πότος 2nd c.AD: Alexander Rhetor 9 ">Refs 4th c.BC+]; νυμφικὰ λουτρά the conveying of water to the bride (compare λουτροφόρος), [NT+2nd c.AD+]
__II in Poets, ={σπονδαί}, libations to the dead, [Refs 5th c.BC+]

_{LSJ Scripture Refs: Eph.5.26 ☩ Titus.3.5}