Usually means: Four-year period or cycle.
Definitions Related words Mentions History
We found 20 dictionaries that define the word quadrennium:

General (18 matching dictionaries)
  1. quadrennium: Merriam-Webster
  2. quadrennium: Oxford Learner's Dictionaries
  3. quadrennium: American Heritage Dictionary of the English Language
  4. quadrennium: Collins English Dictionary
  5. quadrennium: Vocabulary.com
  6. quadrennium: Wordnik
  7. quadrennium: Wiktionary
  8. quadrennium: Webster's New World College Dictionary, 4th Ed.
  9. quadrennium: Infoplease Dictionary
  10. Quadrennium, quadrennium: Dictionary.com
  11. Quadrennium: Wikipedia, the Free Encyclopedia
  12. Quadrennium: Online Plain Text English Dictionary
  13. quadrennium: Webster's Revised Unabridged, 1913 Edition
  14. Quadrennium: AllWords.com Multi-Lingual Dictionary
  15. quadrennium: FreeDictionary.org
  16. quadrennium: The Phrontistery - A Dictionary of Obscure Words
  17. quadrennium: Mnemonic Dictionary
  18. quadrennium: TheFreeDictionary.com

Miscellaneous (1 matching dictionary)
  1. quadrennium: A Word A Day

Science (1 matching dictionary)
  1. How Many? A Dictionary of Units of Measurement (No longer online)

(Note: See quadrennia as well.)

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Definitions from Wiktionary (quadrennium)

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

Similar:
quadriennium, quadrennial, tetraeteris, quadriennial, tetraeterid, quinquenniad, pentad, quinquennium, quadrimester, quinquennal, more...

Opposite:
biennium, triennium, quinquennium, decennium

Types:
olympiad, leap year, fiscal year, more...

Adjectives:
next, first, last, past, previous, new, present, second, whole, entire, third

▸ Words similar to quadrennium

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▸ Rhymes of quadrennium

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Similar:
quadriennium, quadrennial, tetraeteris, quadriennial, tetraeterid, quinquenniad, pentad, quinquennium, quadrimester, quinquennal, more...

Opposite:
biennium, triennium, quinquennium, decennium

Types:
olympiad, leap year, fiscal year, more...

Adjectives:
next, first, last, past, previous, new, present, second, whole, entire, third



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