1. something that is needed or demanded; a necessary condition
2. an official rule or regulation that must be followed
Usage: often legal or institutional

Examples

• A college degree is a requirement for this job.
• The safety requirements must be met before construction begins.
• Students must fulfill all graduation requirements to receive their diploma.
• The new building code has stricter fire safety requirements.
• Meeting the age requirement is necessary to vote in elections.
• The loan application has several documentation requirements.
• Physical fitness is a basic requirement for military service.