Definition from Wiktionary, the free dictionary
centennial (not comparable)
- Relating to, or associated with, the commemoration of an event that happened a hundred years before.
- a centennial ode
- Happening once in a hundred years.
- a centennial jubilee; a centennial celebration
- Lasting or aged a hundred years.
- That opened through long lines / Of sacred ilex and centennial pines.
centennial (plural centennials)
- The hundredth anniversary of an event or happening.