I. ˈmiləˌnerē, mə̇ˈlenərē, -ri noun
( -es )
Etymology: Late Latin millenarium millennium, from neuter of millenarius of a thousand
1.
a. : a group of 1000 units or things
b. : 1000 years : millennium
2.
[Medieval Latin millenarius, from Late Latin millenarius, adjective]
: millenarian
3. : a 1000th anniversary or its celebration
II. adjective
Etymology: Late Latin millenarius of a thousand, from Latin milleni one thousand each (from mille thousand) + -arius -ary
1.
a. : relating to or consisting of 1000 (as 1000 years)
b. : being in command of 1000 men
2. : relating to the millennium or millenarians : millennial