Definitions

1. verb

to make or attempt to make something, especially a church, conform to the principles or practices of the Roman Catholic Church, or to convert people to Catholicism

“The monarch’s efforts to catholicise the country were met with resistance from the Protestant population.”

2. noun

the process of making or attempting to make something conform to the principles or practices of the Roman Catholic Church, or the conversion of people to Catholicism

“The catholicisation of the kingdom was a gradual process that took centuries to complete.”