triennial
adjective
tri·en·ni·al
(ˌ)trī-ˈe-nē-əl 
1
: occurring or being done every three years
the triennial convention
2
: consisting of or lasting for three years
a triennial contract
triennial
noun
Examples of triennial in a Sentence
Recent Examples on the Web
The triennial runs until 19 October 2025 and features 18 artists from 15 countries, all whom have created new commissions scattered along the waterfront and throughout the town.
—
Joanne Shurvell, Forbes.com, 26 Aug. 2025
The triennial Sloan Film Summit from nonprofit arts organization Film Independent is back for 2025.
—Samantha Bergeson, IndieWire, 7 May 2025
The triennial event brings together member organizations from Latin America to celebrate the impact of the global Girl Scout movement.
—Ale Delgado, San Diego Union-Tribune, 13 Mar. 2025
All of the above is context for the news that Kaegi’s office has completed its triennial reassessment of Chicago properties and found that, despite robustly higher values for homes in the city over the past three years, values for commercial properties as a group have risen even more.
—The Editorial Board, Chicago Tribune, 31 Jan. 2025
See All Example Sentences for triennial
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Joanne Shurvell, Forbes.com, 26 Aug. 2025
The triennial Sloan Film Summit from nonprofit arts organization Film Independent is back for 2025.
—Samantha Bergeson, IndieWire, 7 May 2025
The triennial event brings together member organizations from Latin America to celebrate the impact of the global Girl Scout movement.
—Ale Delgado, San Diego Union-Tribune, 13 Mar. 2025
All of the above is context for the news that Kaegi’s office has completed its triennial reassessment of Chicago properties and found that, despite robustly higher values for homes in the city over the past three years, values for commercial properties as a group have risen even more.
—The Editorial Board, Chicago Tribune, 31 Jan. 2025
See All Example Sentences for triennial
Cite this Entry
“Triennial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/triennial. Accessed 10 Sep. 2025.
Copy CitationKids Definition
triennial
adjective
tri·en·ni·al
(ˈ)trī-ˈen-ē-əl
1
: consisting of or lasting for three years
2
: occurring or being done every three years
triennial
noun
Love words? Need even more definitions?
Merriam-Webster unabridged
Share