1. 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
   - radon, atomic number 86

1. A graduate nurse who has passed examinations for registration
   - registered nurse

Type of: argonon, chemical element, element, inert gas, noble gas, nurse, sister [Brit]

Encyclopedia: RN

• ship's papers
• ship-breaker
• ship-towed long-range acoustic detection system
• shipboard
• shipboard duty
• shipboard soldier
• shipboard system
• shipbuilder
• shipbuilding
• shipbuilding industry
• shipload
• shipmaster
• shipmate
• shipment
• shipowner
• shipper
• shipping
• shipping agent
• shipping articles
• shipping clerk
• shipping company
• shipping fever
• shipping office
• shipping pneumonia
• shipping room