Definition of triennium in English:

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Pronunciation: /trīˈenēəm/

noun (plural triennia /-ˈenēə/ or trienniums)

A specified period of three years.
Example sentences
  • Indeed, he deferred submitting a proposal for renewal of a triennium of funding two years ago while he pulled together a massive restructuring of the organisation.
  • We call it vocational registration, and we have to accumulate a minimum number of points over a triennium.
  • The new International Rules of Yacht Racing, covering the triennium 2001-2004, were implemented for the first time in an Optimist regatta in Asia and the race organizers watched with great interest.


Mid 19th century: from Latin, from tri- 'three' + annus 'year'.

For editors and proofreaders

Syllabification: tri·en·ni·um

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