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

Type of: plutonium 239

• omnidirectional range
• omnifarious
• omnipotence
• omnipotent
• omnipresence
• omnipresent
• omnirange
• omniscience
• omniscient
• omnium-gatherum
• omnivore
• omnivorous
• Omomyid
• Omomyid group
• omophagia
• Omotic
• omphalocele
• omphalos
• omphaloskepsis
• Omphalotus
• Omphalotus illudens
• omphalus
• Omsk
• on
• on a higher floor