regenerate (adj.)
mid-15c., from Latin regeneratus, past participle of regenerare "bring forth again" (see regeneration).
regenerate (v.)
1550s, back-formation from regeneration or else from Latin regeneratus, past participle of regenerare "bring forth again" (see regeneration). Originally religious; of body parts from 1590s. Related: Regenerated; regenerating. Replaced earlier regeneren (c.1400), from Old French regenerer.