Abbott-Smith Manual Greek Lexicon
λυτρωτής (G3086)
1 λυτρωτής , -οῦ, ὁ ( λυτρόω ), [in LXX: of God, Ps 18 (19):14 77 (78):35 ( גֹּאֵל )*;] a redeemer , deliverer : Ac 7:35 (not found elsewhere).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain