From The Collaborative International Dictionary of English v.0.44 [gcide]:
2. (Theol.) The entering into a new spiritual life; the act of becoming, or of being made, Christian; that change by which holy affectations and purposes are substituted for the opposite motives in the heart.
3. (Biol.) The reproduction of a part which has been removed or destroyed; re-formation; -- a process especially characteristic of a many of the lower animals; as, the regeneration of lost feelers, limbs, and claws by spiders and crabs.
4. (Physiol.) (a) The reproduction or renewal of tissues, cells, etc., which have been used up and destroyed by the ordinary processes of life; as, the continual regeneration of the epithelial cells of the body, or the regeneration of the contractile substance of muscle. (b) The union of parts which have been severed, so that they become anatomically perfect; as, the regeneration of a nerve.
From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
78 Moby Thesaurus words for "regeneration": Fabianism, adoption, amendment, change of allegiance, change of heart, change of mind, circumcision, conversion, copy, duplication, extremism, gradualism, imitation, improvement, meliorism, new birth, new life, palingenesis, palingenesy, progressivism, radical reform, radicalism, re-creation, re-formation, reanimation, rebirth, rebuilding, reclamation, reconstitution, reconstruction, recrudescence, redeemedness, redemption, redesign, redoing, reedition, reestablishment, refashioning, reform, reformation, reformism, refreshment, regeneracy, regenerateness, regenesis, reinstitution, reissue, rejuvenation, rejuvenescence, remaking, renaissance, renascence, renewal, renovation, reorganization, repetition, reprinting, reproduction, reshaping, restoration, restructuring, resurgence, resurrection, resuscitation, revision, revisionism, revival, revivescence, revivescency, revivification, revolution, salvation, second birth, second wind, second youth, spiritual purification, transformation, utopianism
From Easton's 1897 Bible Dictionary [easton]:
Regeneration only found in Matt. 19:28 and Titus 3:5. This word literally means a "new birth." The Greek word so rendered (palingenesia) is used by classical writers with reference to the changes produced by the return of spring. In Matt. 19:28 the word is equivalent to the "restitution of all things" (Acts 3:21). In Titus 3:5 it denotes that change of heart elsewhere spoken of as a passing from death to life (1 John 3:14); becoming a new creature in Christ Jesus (2 Cor. 5:17); being born again (John 3:5); a renewal of the mind (Rom. 12:2); a resurrection from the dead (Eph. 2:6); a being quickened (2:1, 5). This change is ascribed to the Holy Spirit. It originates not with man but with God (John 1:12, 13; 1 John 2:29; 5:1, 4). As to the nature of the change, it consists in the implanting of a new principle or disposition in the soul; the impartation of spiritual life to those who are by nature "dead in trespasses and sins." The necessity of such a change is emphatically affirmed in Scripture (John 3:3; Rom. 7:18; 8:7-9; 1 Cor. 2:14; Eph. 2:1; 4:21-24).
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