quadranscentennial

The twenty-fifth anniversary of an event or happening.

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”.

Occurring every twenty-five years.

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.

Of or related to a twenty-five-year period.