Adjective quincentenary has 1 sense
  1. quincentennial, quincentenary - of or relating to a 500th anniversary; "the quincentennial celebration of the founding of the city"
,Noun quincentenary has 1 sense
  1. quincentennial, quincentenary - the 500th anniversary (or the celebration of it)
    --1 is a kind of anniversary, day of remembrance
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