1. [ noun ] a span of 1000 years
Related terms: time_period century
2. [ noun ] (New Testament) in Revelations it is foretold that those faithful to Jesus will reign with Jesus over the earth for a thousand years; the meaning of these words have been much debated
Related terms: future doctrine New_Testament
3. [ noun ] the 1000th anniversary (or the celebration of it)
Related terms: anniversary
Similar spelling:   millenniumism