1. A soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
   - thorium, atomic number 90 
2. The fifth day of the week; the fourth working day
   - Thursday

Type of: metal, metallic element, weekday

Part of: monazite, thorite

Encyclopedia: Th

• braky
• braless
• Bram Stoker
• Brama
• Brama raii
• Bramante
• bramble
• bramble bush
• brambling
• brambly
• Bramidae
• Bramley
• Bramley's Seedling
• bran
• bran flake
• bran muffin
• bran-new
• branch
• branch line
• branch out
• branch water
• branched
• branched chain
• branched chain ketoaciduria
• branchia