noun
- A radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health.
- synonyms: radon, atomic number 86
- A graduate nurse who has passed examinations for registration.
- synonyms: registered nurse
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Rn. Retrieved September 20, 2026, from http://smartdefine.org/rn/definitions/1307100 |
| Chicago | WordNet. 2010. "Rn" http://smartdefine.org/rn/definitions/1307100 (accessed September 20, 2026). |
| Harvard | WordNet 2010, Rn, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/rn/definitions/1307100>. |
| MLA | WordNet. "Rn" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/rn/definitions/1307100> |