The Collaborative International Dictionary of English v.0.48:

Redemptive \Re*demp"tive\ (-t?v), a.
   Serving or tending to redeem; redeeming; as, the redemptive
   work of Christ.
   [1913 Webster]

WordNet (r) 3.0 (2006):

redemptive
    adj 1: of or relating to or resulting in redemption; "a
           redemptive theory about life"- E.K.Brown [syn:
           redemptive, redemptional, redemptory]
    2: bringing about salvation or redemption from sin; "saving
       faith"; "redemptive (or redeeming) love" [syn: redemptive,
       redeeming(a), saving(a)]

Moby Thesaurus II by Grady Ward, 1.0:

58 Moby Thesaurus words for "redemptive":
   Christlike, Christly, apologetic, ascetic, atoning, celestial,
   cleansing, compensational, compensatory, divine, empyrean,
   expiatory, godlike, godly, heavenly, incarnate, incarnated,
   indemnificatory, intercessional, intercessive, lustral,
   lustrational, lustrative, made flesh, mediative, mediatory,
   penitential, piacular, propitiative, propitiatory, purgative,
   purgatorial, purifying, reclamatory, recompensing, redeeming,
   redemptional, redressing, reparative, reparatory, repentant,
   repenting, restitutional, restitutive, restitutory, restorative,
   retributive, reversional, reversionary, revertible, righting,
   salvational, satisfactional, self-existent, squaring, superhuman,
   supernatural, transcendent