1. to convert or attempt to convert (a person or group) to a particular religion, especially Christianity, through missionary work
Usage: chiefly British spelling; American English typically uses 'missionize'; often used in historical or religious contexts
2. to send missionaries to (a region or country)
Usage: chiefly British spelling

Examples

• Christian organizations worked to missionise remote villages in Africa.
• The church decided to missionise the newly discovered territories.
• Missionaries were sent to missionise the indigenous population.
• They sought to missionise the region through education and healthcare.
• Colonial powers often missionised territories they controlled.
• The organization has been missionising communities for over a century.