Lexical Definition

‎λυτρόω‎ lytróō (loo-tro'-o) to ransom ^G:V
from ‎λύτρον‎

redeem.

• to ransom (literally or figuratively)

Abbott-Smith

λυτρόω, -ῶ (< λύτρον, q.v.), [in LXX chiefly for פּדה, גּאל;]
to release on receipt of ransom; mid., to release by paying ransom, to redeem: in spiritual sense, Tit 2:14; pass, I Pe 1:18; in general sense, to deliver (cf. Ex 6:6, Ps 68 (69):18, al.): Lk 24:21.†

Abbott-Smith References

Liddell-Scott-Jones

λυτρόω-όω,

release on receipt of a ransom, hold to ransom, τινὰ χρημάτων ὅσων δοκεῖ for such a sum as is agreed on, [Refs 5th c.BC+]; redeem a pledge, λ. τὰ ἱμάτια [Refs 2nd c.AD+], etc.:—middle, release by payment of ransom, redeem, παρὰ τῶν Αἰτωλῶν [NT+3rd c.BC+]:—passive, to be ransomed, ἐκ τῶν ἰδίων λελυτρόωῶσθαι [NT+4th c.BC+]

__II passive, to be released from an obligation, [Refs 3rd c.BC+]
__III mistranslation of Hebrew 'rp 'break the neck', [LXX]. -ών, ῶνος, ὁ, ={ἀπόπατος}[LXX]

_{LSJ Scripture Refs: LXX.Exod.13.15 ☩ Titus.2.14 ☩ 1Pet.1.18 ☩ LXX.Exod.13.13 ☩ LXX.2Kgs.10.27}