1. engaging in missionary work; attempting to convert people to a particular religion or belief system
Usage: present participle of 'missionise' (British spelling); American spelling is 'missionizing'; often used in religious or historical contexts

Examples

• The organization has been missionising in remote villages for over a decade.
• Early Christian groups were missionising throughout the Roman Empire.
• She spent her career missionising and establishing schools in Africa.
• The church is missionising to reach new communities in the city.
• They were accused of missionising rather than respecting local traditions.
• Missionising efforts in the 19th century often accompanied colonial expansion.