chiliasm

n. Christianity
The doctrine stating that Jesus will reign on earth for 1,000 years.

[New Latin chīliasmus, from Late Latin chīlias, chiliad. See chiliad.]

chiliast chil'i·ast' (-ăst', -əst) n.
chiliastic chil'i·as'tic adj.

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The adjective has one meaning:

Meaning #1: relating to or believing in the millennium of peace and happiness
  Synonym: millenarian

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