triennial
/traɪˈɛniəl/
adjective
- Happening every three years.
- The triennial art exhibition attracts visitors from around the world.
- Our town's triennial festival celebrates local culture and history.
- The club holds a triennial meeting to elect new officers.
- Lasting for three years.
- The triennial contract will need to be renewed next spring.
- They signed a triennial lease for the office space.
- The plant has a triennial life cycle, flowering only in its third year.
noun
- An event that occurs every three years.
- The triennial brings together artists from different continents.
- She submitted her work to the photography triennial.
- The art triennial is one of the most anticipated events in the city.