noun
- A government building with five sides that serves as the headquarters of the United States Department of Defense.
- The United States military establishment.
- A five-sided polygon. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). pentagon. Retrieved September 20, 2026, from http://smartdefine.org/pentagon/definitions/1206665 |
| Chicago | WordNet. 2010. "pentagon" http://smartdefine.org/pentagon/definitions/1206665 (accessed September 20, 2026). |
| Harvard | WordNet 2010, pentagon, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/pentagon/definitions/1206665>. |
| MLA | WordNet. "pentagon" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/pentagon/definitions/1206665> |