bicentennial Meaning, Definition & Usage

  1. noun the 200th anniversary (or the celebration of it)
    bicentenary.
  2. adjective of or relating to or completing a period of 200 years
    bicentenary.
    • bicentennial celebration

WordNet

Bi`cen*ten"ni*al adjective
Etymology
Pref. bi- + centennial.
Definitions
  1. Consisting of two hundred years.
  2. Occurring every two hundred years.
Bi`cen*ten"ni*al noun
Definitions
  1. The two hundredth year or anniversary, or its celebration.

Webster 1913