Definition of triennial
1 : occurring or being done every three years the triennial convention
2 : consisting of or lasting for three years a triennial contract
trienniallyplay \-nē-ə-lē\ adverb
Recent Examples of triennial from the Web
Prospect New Orleans began in 2008 as a biennial, but budget problems forced the event’s organizers to rebrand it as a triennial with the third edition in 2014.
A new nonprofit group in Cleveland announced the launch of FRONT, a global triennial art exhibition that will debut in the summer of 2018.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'triennial'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of triennial
Seen and Heard
What made you want to look up triennial? Please tell us where you read or heard it (including the quote, if possible).