English noun: Rn | |||
1. | Rn (substance) 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 | atomic number 86, radon | ||
Broader (hypernym) | argonon, chemical element, element, inert gas, noble gas | ||
2. | RN (person) a graduate nurse who has passed examinations for registration | ||
Synonyms | registered nurse | ||
Broader (hypernym) | nurse | ||
Narrower (hyponym) | NP, nurse clinician, nurse practitioner, nurse-midwife | ||