re-formation (Noun) — Forming again (especially with improvements or removal of defects); renewing and reconstituting.
re-formation (Noun) — A religious movement of the 16th century that began as an attempt to reform the Roman Catholic Church and resulted in the creation of Protestant churches.
re-formation (Noun) — Improvement (or an intended improvement) in the existing form or condition of institutions or practices etc.; intended to make a striking change for the better in social or political or religious affairs.
re-formation (Noun) — Rescuing from error and returning to a rightful course. ex. "the reformation of delinquent children"