regenerative adj.

mid-14c., regeneracioun, "act of regenerating or producing anew," originally spiritual, also of the Resurrection, from Old French regeneracion (Modern French regénération) and directly from Late Latin regenerationem (nominative regeneratio) "a being born again," noun of action from past participle stem of Latin regenerare "make over, generate again," from re- "again" (see re-) + generare "bring forth, beget, produce," from genus "race, kind" (from PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups).

Originally theological, "radical spiritual change in an individual accomplished by the action of God;" of animal tissue, "power or process of growing again," early 15c.; of forests, 1888.