Centennial

Origin

From Latin centum hundred + annus year + -al

Full definition of centennial

Adjective

1. Relating to, or associated with, the commemoration of an event that happened a hundred years before.a centennial ode
2. Happening once in a hundred years.a centennial jubilee; a centennial celebration
3. Lasting or aged a hundred years.
• LongfellowThat opened through long lines
  Of sacred ilex and centennial pines.

Noun

1. The hundredth anniversary of an event or happening.

Derived terms

• semicentennial
• sesquicentennial