quadrennium

English

Etymology

From Late Latin quadrennium, from Latin quadriennium, from quadriennis (“4-year”) + -ium (“forming abstract nouns”).

Pronunciation

• (General American) IPA^(key): /kwɑˈdrɛniəm/
• (Received Pronunciation) IPA^(key): /kwɒˈdrɛnɪəm/, /kwəˈdrɛnɪəm/

Noun

quadrennium (plural quadrenniums or quadrennia)

1. A period of 4 years, particularly (historical) the sets of four years in the ancient Egyptian and Greek calendars.

   Coordinate terms: annum, biennium, triennium, quinquennium, sexennium, septennium, octennium, novennium, decennium, centennium, quincentennium, millennium, decamillennium, centimillennium, millionennium

Synonyms

• tetraeteris, tetraeterid, olympiad

Hypernyms

• See Thesaurus:quartet

Related terms

• (adj.) quadrennial

References

• “quadrennium, n.”, in OED Online ⁠, Oxford, Oxfordshire: Oxford University Press, 2022.