1. to make bilingual; to teach or enable someone to speak two languages fluently
Usage: chiefly British spelling; American English typically uses 'bilingualize'; transitive verb
2. to convert a text, document, or system to use two languages
Usage: often used in educational or institutional contexts

Examples

• The school aims to bilingualise all students by the end of primary education.
• Early childhood exposure can help bilingualise young learners more effectively.
• The government decided to bilingualise official documents to serve both language communities.
• Parents often bilingualise their children by speaking different languages at home.
• The program was designed to bilingualise immigrant families within two years.