Mil-lĕn'nĭ-ŭm, n.

noun

n. [L. Lat., from Lat. mille, a thousand, and annus, a year.] A thousand years;—a word used to denote the thousand years mentioned in the the twentieth chapter of Revelation, during which period Satan will be bound, and holiness become triumphant throughout the world. Some believe that, during this period, Christ will reign on earth in person with his saints.