quadrenniums
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                  Example Sentences
Example:The biennium is often used for budget cycles in governmental institutions.
Definition:A period of two years.
From biennium
                  Example:Historic records keeping in ancient Greece were marked by trienniums.
Definition:A period of three years.
From triennium
                  Example:Decenniums have been used historically for commemorating significant events.
Definition:A period of ten years.
From decennium
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