triennium

noun

tri·​en·​ni·​um trī-ˈe-nē-əm How to pronounce triennium (audio)
plural trienniums or triennia trī-ˈe-nē-ə How to pronounce triennium (audio)
: a period of three years

Examples of triennium in a Sentence

Recent Examples on the Web
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.
Concurrently, Wasserman’s The Collective anticipates that the NWSL and WNBA will witness valuation increases of no less than $1.6 billion over the forthcoming triennium. Priya Oberoi, Forbes.com, 27 Mar. 2025

Word History

Etymology

Latin, from tri- + annus year — more at annual

First Known Use

1847, in the meaning defined above

Time Traveler
The first known use of triennium was in 1847

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Cite this Entry

“Triennium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/triennium. Accessed 9 Apr. 2025.

Last Updated: - Updated example sentences
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