centennial Meaning, Definition & Usage

  1. noun the 100th anniversary (or the celebration of it)
    centenary.
  2. adjective of or relating to or completing a period of 100 years
    centenary.
    • centennial celebration

WordNet

Cen*ten"ni*al adjective
Etymology
L. centum a hundred + annus year.
Definitions
  1. Relating to, or associated with, the commemoration of an event that happened a hundred years before; as, a centennial ode.
  2. Happening once in a hundred years; as, centennial jubilee; a centennial celebration.
  3. Lasting or aged a hundred years.
    Thet opened through long lines Of sacred ilex and centennial pines. Longfellow.
Cen*ten"ni*al noun
Definitions
  1. The celebration of the hundredth anniversary of any event; a centenary. U. S.

Webster 1913