- (a.) Of or pertaining to half of a century or a period of fifty years; as, a semicentennial commemoration.
- (n.) A fiftieth anniversary.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). semicentennial. Retrieved September 24, 2026, from http://smartdefine.org/semicentennial/definitions/2060177 |
| Chicago | Webster's. 2011. "semicentennial" http://smartdefine.org/semicentennial/definitions/2060177 (accessed September 24, 2026). |
| Harvard | Webster's 2011, semicentennial, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/semicentennial/definitions/2060177>. |
| MLA | Webster's. "semicentennial" 28 May 2011. Web. 24 September 2026. <http://smartdefine.org/semicentennial/definitions/2060177> |