1. a formal ceremony to mark the beginning of something, especially the start of an important person’s term in office
2. the formal beginning or introduction of a system, policy, or period

Examples

• The presidential inauguration drew thousands of spectators to the capital.
• She attended the mayor’s inauguration ceremony at city hall.
• The inauguration of the new subway line was celebrated with free rides.
• His inauguration as company president marked a new era for the business.
• The museum’s inauguration featured speeches from local dignitaries.
• The inauguration of the peace treaty brought hope to both nations.