| BIENNIUM | • biennium n. A period of two years, particularly for purposes involving intercalation or fiscal calculations. • BIENNIUM n. (Latin) a period of two years. |
| BIENNIUMS | • bienniums n. Plural of biennium. • BIENNIUM n. (Latin) a period of two years. |
| BIMILLENNIUM | • BIMILLENNIUM n. (Latin) a period of two thousand years. |
| BIMILLENNIUMS | • BIMILLENNIUM n. (Latin) a period of two thousand years. |
| DECENNIUM | • decennium n. Synonym of decade: a ten year period. • DECENNIUM n. (Latin) a period of ten years. |
| DECENNIUMS | • decenniums n. Plural of decennium. • DECENNIUM n. (Latin) a period of ten years. |
| MILLENNIUM | • millennium n. A period of time consisting of one thousand years. • millennium n. (Christianity) The period of one thousand years during which Christ will reign on earth (according to… • millennium n. A period of universal happiness, peace or prosperity; a utopia. |
| MILLENNIUMS | • millenniums n. Plural of millennium. • MILLENNIUM n. (Latin) a period of one thousand years. |
| QUADRENNIUM | • quadrennium n. A period of 4 years, particularly (historical) the sets of four years in the ancient Egyptian and Greek calendars. • QUADRENNIUM n. (Latin) a period of four years, also QUADRIENNIUM. |
| QUADRENNIUMS | • quadrenniums n. Plural of quadrennium. • QUADRENNIUM n. (Latin) a period of four years, also QUADRIENNIUM. |
| QUADRIENNIUM | • QUADRIENNIUM n. (Latin) a period of four years, also QUADRENNIUM. |
| QUADRIENNIUMS | • QUADRIENNIUM n. (Latin) a period of four years, also QUADRENNIUM. |
| QUINQUENNIUM | • quinquennium n. A period of five years. • QUINQUENNIUM n. a period of five years, also QUINQUENNIAD. |
| QUINQUENNIUMS | • quinquenniums n. Plural of quinquennium. • QUINQUENNIUM n. a period of five years, also QUINQUENNIAD. |
| SEPTENNIUM | • septennium n. A period of seven years. • SEPTENNIUM n. a period of seven years. |
| SEPTENNIUMS | • septenniums n. Plural of septennium. • SEPTENNIUM n. a period of seven years. |
| TRIENNIUM | • triennium n. A period of three years. • TRIENNIUM n. (Latin) a period of three years. |
| TRIENNIUMS | • trienniums n. Plural of triennium. • TRIENNIUM n. (Latin) a period of three years. |