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 Red Sox reliever recorded a five-out save on Saturday evening to send Puerto Rico home and advance the still undefeated Italy to the penultimate round of the triennial tournament.
—
Gabrielle Starr, Boston Herald, 14 Mar. 2026
The triennial Roppongi Crossing series, a survey of contemporary art in Japan, is unmissable for those who want to understand the local scene.
—Jessica Kozuka, Travel + Leisure, 13 Mar. 2026
According to Hamilton, federal oversight of PREA is limited to a triennial audit of each prison or detention facility, and there is no real penalty when a facility fails the audit.
—Emilia Otte, Hartford Courant, 20 Feb. 2026
Public Enemy frontman Chuck D is used to the triennial grumbling from KISS bassist/singer Gene Simmons about how hip-hop does not belong in the Rock and Roll Hall of Fame.
—Gil Kaufman, Billboard, 13 Feb. 2026
See All Example Sentences for triennial
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Gabrielle Starr, Boston Herald, 14 Mar. 2026
The triennial Roppongi Crossing series, a survey of contemporary art in Japan, is unmissable for those who want to understand the local scene.
—Jessica Kozuka, Travel + Leisure, 13 Mar. 2026
According to Hamilton, federal oversight of PREA is limited to a triennial audit of each prison or detention facility, and there is no real penalty when a facility fails the audit.
—Emilia Otte, Hartford Courant, 20 Feb. 2026
Public Enemy frontman Chuck D is used to the triennial grumbling from KISS bassist/singer Gene Simmons about how hip-hop does not belong in the Rock and Roll Hall of Fame.
—Gil Kaufman, Billboard, 13 Feb. 2026
See All Example Sentences for triennial
Cite this Entry
“Triennial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/triennial. Accessed 22 Mar. 2026.
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
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