Meaning

verb reestablish on a new, usually improved, basis or make new or like new

verb amplify (an electron current) by causing part of the power in the output circuit to act upon the input circuit

verb bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one

originFrom Latin regenerātus, perfect passive participle of regenerō, from re- + generō, from genus, generis (“descent, origin, birth”); -ō, equivalent to re- + generate.

Etymology from Wiktionary, CC BY-SA 3.0