What is Legalization?

Legal Definition
The act of making lawful.

2. By legalization, is also understood the act by which a judge or competent officer authenticates a record, or other matter, in order that the same may be lawfully read in evidence. Vide Authentication.
-- Bouviers Law Dictionary
Legal Definition
The act of legalizing or making legal or lawful. See Legalize. See Legalized nuisance.
-- Black's Law Dictionary
Legal Definition
The making lawful of anything.
-- Ballentine's Law Dictionary