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.

the new birth engendered by the Holy Spirit vhenever a sinner repents of sin toward God and commits himself/herself in faith to Jesus as Savior and Lord.

The impartation of spiritual life by divine grace

The meaning of this term is to be born again, to have a new life. The new life is spiritual, not physical, and is a work of the Holy Spirit. See John 3:3. (DTC)

God's making a person alive spiritually and implanting a new principle of desire within them.

Being born again.

Regeneration is a synonym for conversion. It is the act in which the Holy Spirit creates new life or faith in a person who by nature is spiritually dead. Those who have been converted or regenerated by the Holy Spirit through the means of grace are born again (John 3:3-6, 1 Peter 1:23).