Cite
 

Meaning of decennial

de•cen•ni•al

Pronunciation: (di-sen'ē-ul), [key]
— adj.
  1. of or for ten years.
  2. occurring every ten years.
—n.
  1. a decennial anniversary.
  2. its celebration.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.