1. the act of remembering and honoring someone or something, especially in a ceremony
2. something that serves as a reminder or memorial of a person or event

Examples

• The town held a commemoration of the fallen soldiers on Memorial Day.
• A statue was erected in commemoration of the civil rights leader.
• The anniversary celebration served as a commemoration of their wedding day.
• The museum’s exhibit was a moving commemoration of the historical event.
• They planted a tree in commemoration of their grandfather’s life.
• The ceremony included a moment of silence in commemoration of the victims.