1. Of or relating to the doctrine of the millennium
   "The millenary beliefs of the religious group predicted a thousand-year period of peace"
    
2. Relating to or consisting of 1000
   "The millenary anniversary of the city's founding was celebrated with great fanfare"

1. The 1000th anniversary (or the celebration of it)
   "The city planned a grand celebration for its millenary";
   - millennium
    
2. A span of 1000 years
   "The new millenary began in the year 2001";
   - millennium, chiliad
    
3. A sum or aggregate of one thousand (especially one thousand years)
   "The millenary of the city's founding was celebrated with great fanfare"

Derived forms: millenaries

Type of: 1000, anniversary, day of remembrance, G, K, M, one thousand, period, period of time, thou [informal], thousand, time period, time span

Encyclopedia: Millenary