noun
- Infection of the upper respiratory tract. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). upper respiratory infection. Retrieved October 1, 2026, from http://smartdefine.org/upper_respiratory_infection/definitions/1245813 |
| Chicago | WordNet. 2010. "upper respiratory infection" http://smartdefine.org/upper_respiratory_infection/definitions/1245813 (accessed October 1, 2026). |
| Harvard | WordNet 2010, upper respiratory infection, Smart Define, viewed 1 October, 2026, <http://smartdefine.org/upper_respiratory_infection/definitions/1245813>. |
| MLA | WordNet. "upper respiratory infection" 23 October 2010. Web. 1 October 2026. <http://smartdefine.org/upper_respiratory_infection/definitions/1245813> |