millennium
https://gyazo.com/24a3f3067f71ea51751beea6b6d8d8f7
source: Who can wield the millennium items? | Duel Amino
noun (plural millennia |-ˈlenēə| or millenniums)
1. a period of a thousand years, especially when calculated from the traditional date of the birth of Christ.
(the millennium) Christian Theology the prophesied thousand-year reign of Christ at the end of the age (Rev. 20:1–5).
〖the ～〗 〘宗〙 至福千年〘キリストが再臨して地上を統治する千年間〙
(the millennium) a utopian period of good government, great happiness, and prosperity.
〖the ～〗 (遠い未来の)平和で幸福な時代
2. an anniversary of a thousand years:
千年祭
e.g. the millennium of the Russian Orthodox Church.
(the millennium) the point at which one period of a thousand years ends and another begins.
〖the ～〗 (2001年など)新たな千年が始まる時, ミレニアム
ORIGIN
mid 17th century: modern Latin, from Latin mille ‘thousand’, on the pattern of biennium.
USAGE
The spelling of millennium is less difficult if one remembers that it comes ultimately from two Latin words containing double letters: mille, ‘thousand,’ and annum, ‘year.’.