Centenary /(?)/

Cen·te·na·ry

Centenary

a.
  1. Relating to, or consisting of, a hundred.
  2. Occurring once in every hundred years; centennial.

Centenary

n.

pl. Centenaries

  1. The aggregate of a hundred single things; specifically, a century.
  2. A commemoration or celebration of an event which occurred a hundred years before.