chili- +

(Greek: thousand, thousands; thousandth, thousandths,)

One thousand.
A plane figure of a thousand angles and sides.
chiliahedron, chiliaederon
A figure bounded by a thousand plane surfaces.
The commander of a thousand men; properly a term of Greek or Roman history.
A system with one thousand rulers.
1. The doctrine stating that Jesus will reign on earth for 1,000 years.
2. Belief in the Christian doctrine of the millennium mentioned in the Book of Revelations.

The term millennium comes from Latin, "1,000 years", the period of 1,000 years in which, according to some schools of Christian eschatology (theology or religious beliefs), Christ will reign again gloriously on earth.

Belief in the millennium, based on the book of Revelations 20 in the Bible, has recurred in Christianity since the earliest times. Today it is held and taught by the Adventists and some other conservative evangelical bodies. Belief in the millennium is called chiliasm by historians of the ancient church.

Someone who believes in the coming of the millennium (a time of great peace and prosperity) when Christ returns to earth.
The sacrifice of one thousand animals.