1. Official permission or approval to do something; the act of giving someone the power or right to act on behalf of another.
Usage: British English spelling (American English: authorizations); Plural form of authorisation; Commonly used in legal, business, and administrative contexts
2. A document or certificate that grants official permission or power to perform a specific action or hold a specific position.
Usage: Often refers to formal written documents

Examples

• The bank requires written authorisations from account holders before processing large transfers.
• All staff members must obtain proper authorisations before accessing confidential files.
• The government issued new authorisations for renewable energy projects.
• Medical authorisations are needed before any surgical procedures can begin.
• She collected authorisations from all department heads to proceed with the merger.
• Travel authorisations must be approved by the human resources department.
• The company maintains a record of all employee authorisations for security purposes.