noun
- An agency of the Interior Department responsible for the national parks. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). national park service. Retrieved October 1, 2026, from http://smartdefine.org/national_park_service/definitions/1222851 |
| Chicago | WordNet. 2010. "national park service" http://smartdefine.org/national_park_service/definitions/1222851 (accessed October 1, 2026). |
| Harvard | WordNet 2010, national park service, Smart Define, viewed 1 October, 2026, <http://smartdefine.org/national_park_service/definitions/1222851>. |
| MLA | WordNet. "national park service" 23 October 2010. Web. 1 October 2026. <http://smartdefine.org/national_park_service/definitions/1222851> |