quadrennium
English
Etymology
From Latin quadrennium, from quadri- (“four”) + annus (“year”) + -ium (“-ium: forming neuter nouns”).
Pronunciation
- IPA(key): /kwɑˈdɹɛnːjəm/
Noun
quadrennium (plural quadrenniums or quadrennia)
- A period of 4 years, (especially historical astronomy) the sets of four years in the Egyptian and Greek calendars.
Synonyms
- tetraeteris, tetraeterid
Related terms
- quadrennial
- (3-year period): triennium
- (5-year period): quinquennium, quinquenniad, quintennium, lustrum
- 10-year period: decade
- 100-year period: century
- 1000-year period: millennium