1. Plutonium 239 that is recovered when nuclear weapons are disassembled; it is stored in plutonium pits
   - weapons plutonium

Type of: plutonium 239

• Ballistite
• ballistocardiogram
• ballistocardiograph
• ballock
• balloon
• balloon bomb
• balloon flower
• balloon sail
• balloon seat
• balloon vine
• balloonfish
• ballooning
• balloonist
• ballot
• ballot box
• Ballota
• Ballota nigra
• balloting
• ballottement
• ballpark
• ballpen
• ballplayer
• ballpoint
• ballpoint pen
• ballroom