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quincentennial

Definitions of quincentennial
  1. noun
    the 500th anniversary (or the celebration of it)
    synonyms: quincentenary
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    type of:
    anniversary, day of remembrance
    the date on which an event occurred in some previous year (or the celebration of it)
  2. adjective
    of or relating to a 500th anniversary
    “the quincentennial celebration of the founding of the city”
    synonyms: quincentenary
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