quincentennial

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

the 500th anniversary (or the celebration of it)
• Syn:
quincentenary
• Hypernyms:
anniversary, day of remembrance

II - adjective

of or relating to a 500th anniversary
- the quincentennial celebration of the founding of the city
• Syn:
quincentenary
• Pertains to noun:
quincentenary (for: quincentenary)