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triennium

Pronunciation: /trʌɪˈɛnɪəm/

Definition of triennium

noun (plural triennia /-nɪə/ or trienniums)

  • a specified period of three years.

Origin:

mid 19th century: from Latin, from tri- 'three' + annum 'year'

triennium in other Oxford dictionaries

Definition of triennium in the US English dictionary

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