The act or process of converting or being converted to Christianity. (noun)
Examples of word Christianization
How can Divine Revelation be in need of "Christianization"?
They set up a task force empowered to stop "Christianization" of Muslims in the township.
Where once they stood in staunch opposition to Islamization of Turkey, now they turn their sights on a feared "Christianization" of Turkey as Christians distribute Christian Bibles...
Thus Kristol raised the question whether American Jewry should consider itself to be an appendage of Israel and whether it should accept a "Christianization" of the American polity.
The congress also called for the creation of a militant youth group within each mosque to fight the ongoing "Christianization" of the city ....
Tensions are high in the region following a Muslim congress held in June where it was decided to unite against the "Christianization" in the area.
I believe the practice is a Christianization of the elaborate contractual rites of the various Nordic peoples who received the Faith in the period after Rome's fall and is thus a somewhat alien addition to our predominantly Mediterranean liturgical roots, though its antiquity does also give it a certain merit as well.