What does "quadrennium" mean?

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

What is a synonym for "quadrennium"?

Common synonyms include: foursome, olympiad, quadrangle, quartet, quaternary, rectangle.

Pronounced //kwɑˈdrɛniəm//.

//kwɑˈdrɛniəm// noun

noun ·Uncommon ·Advanced level

Noun

1
A period of 4 years, particularly (historical) the sets of four years in the ancient Egyptian and Greek calendars.
2
a period of four years wordnet

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

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.