1. past tense and past participle of missionise; to convert to a particular religion or ideology through missionary work
Usage: chiefly British spelling (American: missionized); often used in historical or religious contexts

Examples

• The colonial missionaries missionised many indigenous communities in Africa.
• Early Christian groups missionised throughout the Roman Empire.
• The region was missionised by Protestant missionaries in the 19th century.
• They missionised the local population with varying degrees of success.
• The organization missionised remote villages to spread their faith.