1. A radioactive transuranic element
   - roentgenium, Rg, element 111

Type of: chemical element, element

• focal distance
• focal epilepsy
• focal infection
• focal length
• focal point
• focal ratio
• focal seizure
• focalisation
• focalise
• focalization
• focalize
• focally
• focus
• focus group
• focus on
• focused
• focusing
• focussed
• focussing
• fodder
• foe
• foehn
• foeman
• Foeniculum
• Foeniculum dulce