- (n.) A tenth year or tenth anniversary.
- (a.) Consisting of ten years; happening every ten years; as, a decennial period; decennial games.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). decennial. Retrieved September 20, 2026, from http://smartdefine.org/decennial/definitions/1994932 |
| Chicago | Webster's. 2011. "decennial" http://smartdefine.org/decennial/definitions/1994932 (accessed September 20, 2026). |
| Harvard | Webster's 2011, decennial, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/decennial/definitions/1994932>. |
| MLA | Webster's. "decennial" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/decennial/definitions/1994932> |