PLUTONIUM 239 as NOUN

1. Meaning
   • a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel
   • produced by irradiating uranium 238 with slow electrons
   Hypernyms(s) plutonium 239 is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • plutonium (what does plutonium mean?)
   • Pu (what does Pu mean?)
   • atomic number 94 (what does atomic number 94 mean?)
   Hyponym(s)
   • weapons plutonium (what does weapons plutonium mean?)
   • weapon-grade plutonium (what does weapon-grade plutonium mean?)