quinquennials
/kwɪŋˈkwɛniəlz/
noun
- Events or celebrations that occur every five years.
- The museum's quinquennials attract visitors from around the world.
- The city's quinquennials include a grand parade and fireworks.
- Many organizations plan their quinquennials with special conferences.
- The fifth anniversary of an event.
- The school marked its quinquennials with a reunion for alumni.
- The couple celebrated their quinquennials with a trip to Paris.
- They threw a big party for the company's quinquennials.