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Latin quadrans, from quadrans (quarter) + -ennium (compare annus (year)) + -ālis.


  • (UK) IPA(key): /ˈkwɒdrən senˈtenɪəl/


quadranscentennial (plural quadranscentennials)

  1. The twenty-fifth anniversary of an event or happening.
    Synonym: (informal) silver jubilee
    • 2017 December 22, James Higham, “Transforming societies and transforming tourism: sustainable tourism in times of change”, in Journal of Sustainable Tourism, volume 26, number 1:
      It is a year since we marked the twenty-fifth anniversary of the Journal of Sustainable Tourism, noting then that as we “embark upon the next quadranscentennial… we recognise that the 25 years ahead present a new order of challenges confronting sustainable development and sustainable tourism”.

Related terms[edit]


quadranscentennial (not comparable)

  1. Occurring every twenty-five years.
    • 2014, Michael Gose, Common Sense: What It Means to Be a Teacher, page 166:
      So when I planned a Quadranscentennial Pnyx, the quadranscentennial gives away that I had otherwise learned my lesson not to undertake such ventures, because I would not be prepared to undertake another for 25 years, when I expect to still be teaching at the age of 91.
  2. Of or related to a twenty-five-year period.

Derived terms[edit]