noun
- Exposure to exotic infectious agents that pose a high risk of life-threatening disease and can be transmitted as an aerosol and for which there is no vaccine or therapy. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). biosafety level 4. Retrieved September 23, 2026, from http://smartdefine.org/biosafety_level_4/definitions/1246939 |
| Chicago | WordNet. 2010. "biosafety level 4" http://smartdefine.org/biosafety_level_4/definitions/1246939 (accessed September 23, 2026). |
| Harvard | WordNet 2010, biosafety level 4, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/biosafety_level_4/definitions/1246939>. |
| MLA | WordNet. "biosafety level 4" 23 October 2010. Web. 23 September 2026. <http://smartdefine.org/biosafety_level_4/definitions/1246939> |