MILLENARY

I. noun (plural -ries) Etymology: Late Latin millenarium, from neuter of millenarius of a thousand, from Latin milleni one thousand each, from mille Date: 1550 1. a group of 1000 units or things, 1000 years ; millennium , millenarian , II. adjective Etymology: Latin millenarius Date: 1577 suggesting a millennium, relating to or consisting of 1000